Initial commit of ext/mysql shim for PHP 7

9 files changed, 1766 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
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--- /dev/null
+++ b/.gitignore
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+build/
+vendor/
diff --git a/Dockerfile b/Dockerfile
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+++ b/Dockerfile
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+FROM oraclelinux:latest
+ENV PACKAGE_URL https://repo.mysql.com/yum/mysql-5.7-community/docker/x86_64/mysql-community-server-minimal-5.7.9-1.el7.x86_64.rpm
+
+# Install server
+RUN rpmkeys --import http://repo.mysql.com/RPM-GPG-KEY-mysql \
+  && yum install -y $PACKAGE_URL \
+  && yum install -y libpwquality \
+  && rm -rf /var/cache/yum/*
+RUN mkdir /docker-entrypoint-initdb.d
+
+VOLUME /var/lib/mysql
+
+COPY docker-entrypoint.sh /entrypoint.sh
+ENTRYPOINT ["/entrypoint.sh"]
+
+EXPOSE 3306
+CMD ["mysqld"]
diff --git a/README.md b/README.md
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--- /dev/null
+++ b/README.md
@@ -0,0 +1,27 @@
+# PHP 7 Shim for ext/mysql
+
+This library attempts to create a drop-in replacement for ext/mysql on PHP 7 using mysqli.
+
+For the most part, it should _just work_, although you either need to prefix all calls with a `\` (only internal functions will fallback to the global scope)
+or import the functions into every file (e.g. `use function \mysql_connect`).
+
+## Installation
+
+To install, either add `dshafik/php7-mysql-shim` to your `composer.json`:
+
+```sh
+$ composer require dshafik/php7-mysql-shim
+```
+
+or, clone/download this repo, and include `mysql.php` in your project.
+
+## Usage
+
+Once the file is included, it will create `mysql_*` function if they don't already exist.
+
+## Caveats
+
+The only things that should break are calls to `is_resource()` on MySQL connections and results, as these
+are now their `mysqli` equivalents.
+
+Additionally, some errors are now from `ext/mysqli`, and others are `E_USER_WARNING` instead of `E_WARNING`.
diff --git a/composer.json b/composer.json
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--- /dev/null
+++ b/composer.json
@@ -0,0 +1,21 @@
+{
+    "name": "dshafik/php7-mysql-shim",
+    "description": "A PHP 7 shim for ext/mysql",
+    "license": "Apache 2.0",
+    "authors": [
+        {
+            "name": "Davey Shafik",
+            "email": "me@daveyshafik.com",
+            "homepage": "https://daveyshafik.com"
+        }
+    ],
+    "require": {
+        "php": ">= 7.0"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "~5.1"
+    },
+    "autoload": {
+        "files": ["lib/mysql.php"]
+    }
+}
diff --git a/composer.lock b/composer.lock
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index 0000000..83d5a1e
--- /dev/null
+++ b/composer.lock
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+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sb@sebastian-bergmann.de",
+                    "role": "lead"
+                }
+            ],
+            "description": "Mock Object library for PHPUnit",
+            "homepage": "https://github.com/sebastianbergmann/phpunit-mock-objects/",
+            "keywords": [
+                "mock",
+                "xunit"
+            ],
+            "time": "2015-11-09 15:37:17"
+        },
+        {
+            "name": "sebastian/comparator",
+            "version": "1.2.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/comparator.git",
+                "reference": "937efb279bd37a375bcadf584dec0726f84dbf22"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/comparator/zipball/937efb279bd37a375bcadf584dec0726f84dbf22",
+                "reference": "937efb279bd37a375bcadf584dec0726f84dbf22",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3",
+                "sebastian/diff": "~1.2",
+                "sebastian/exporter": "~1.2"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~4.4"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.2.x-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Jeff Welch",
+                    "email": "whatthejeff@gmail.com"
+                },
+                {
+                    "name": "Volker Dusch",
+                    "email": "github@wallbash.com"
+                },
+                {
+                    "name": "Bernhard Schussek",
+                    "email": "bschussek@2bepublished.at"
+                },
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                }
+            ],
+            "description": "Provides the functionality to compare PHP values for equality",
+            "homepage": "http://www.github.com/sebastianbergmann/comparator",
+            "keywords": [
+                "comparator",
+                "compare",
+                "equality"
+            ],
+            "time": "2015-07-26 15:48:44"
+        },
+        {
+            "name": "sebastian/diff",
+            "version": "1.3.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/diff.git",
+                "reference": "863df9687835c62aa423a22412d26fa2ebde3fd3"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/diff/zipball/863df9687835c62aa423a22412d26fa2ebde3fd3",
+                "reference": "863df9687835c62aa423a22412d26fa2ebde3fd3",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~4.2"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.3-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Kore Nordmann",
+                    "email": "mail@kore-nordmann.de"
+                },
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                }
+            ],
+            "description": "Diff implementation",
+            "homepage": "http://www.github.com/sebastianbergmann/diff",
+            "keywords": [
+                "diff"
+            ],
+            "time": "2015-02-22 15:13:53"
+        },
+        {
+            "name": "sebastian/environment",
+            "version": "1.3.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/environment.git",
+                "reference": "6e7133793a8e5a5714a551a8324337374be209df"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/environment/zipball/6e7133793a8e5a5714a551a8324337374be209df",
+                "reference": "6e7133793a8e5a5714a551a8324337374be209df",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~4.4"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.3.x-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                }
+            ],
+            "description": "Provides functionality to handle HHVM/PHP environments",
+            "homepage": "http://www.github.com/sebastianbergmann/environment",
+            "keywords": [
+                "Xdebug",
+                "environment",
+                "hhvm"
+            ],
+            "time": "2015-12-02 08:37:27"
+        },
+        {
+            "name": "sebastian/exporter",
+            "version": "1.2.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/exporter.git",
+                "reference": "7ae5513327cb536431847bcc0c10edba2701064e"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/exporter/zipball/7ae5513327cb536431847bcc0c10edba2701064e",
+                "reference": "7ae5513327cb536431847bcc0c10edba2701064e",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3",
+                "sebastian/recursion-context": "~1.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~4.4"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.2.x-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Jeff Welch",
+                    "email": "whatthejeff@gmail.com"
+                },
+                {
+                    "name": "Volker Dusch",
+                    "email": "github@wallbash.com"
+                },
+                {
+                    "name": "Bernhard Schussek",
+                    "email": "bschussek@2bepublished.at"
+                },
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                },
+                {
+                    "name": "Adam Harvey",
+                    "email": "aharvey@php.net"
+                }
+            ],
+            "description": "Provides the functionality to export PHP variables for visualization",
+            "homepage": "http://www.github.com/sebastianbergmann/exporter",
+            "keywords": [
+                "export",
+                "exporter"
+            ],
+            "time": "2015-06-21 07:55:53"
+        },
+        {
+            "name": "sebastian/global-state",
+            "version": "1.1.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/global-state.git",
+                "reference": "bc37d50fea7d017d3d340f230811c9f1d7280af4"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/global-state/zipball/bc37d50fea7d017d3d340f230811c9f1d7280af4",
+                "reference": "bc37d50fea7d017d3d340f230811c9f1d7280af4",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~4.2"
+            },
+            "suggest": {
+                "ext-uopz": "*"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                }
+            ],
+            "description": "Snapshotting of global state",
+            "homepage": "http://www.github.com/sebastianbergmann/global-state",
+            "keywords": [
+                "global state"
+            ],
+            "time": "2015-10-12 03:26:01"
+        },
+        {
+            "name": "sebastian/recursion-context",
+            "version": "1.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/recursion-context.git",
+                "reference": "994d4a811bafe801fb06dccbee797863ba2792ba"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/recursion-context/zipball/994d4a811bafe801fb06dccbee797863ba2792ba",
+                "reference": "994d4a811bafe801fb06dccbee797863ba2792ba",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~4.4"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Jeff Welch",
+                    "email": "whatthejeff@gmail.com"
+                },
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                },
+                {
+                    "name": "Adam Harvey",
+                    "email": "aharvey@php.net"
+                }
+            ],
+            "description": "Provides functionality to recursively process PHP variables",
+            "homepage": "http://www.github.com/sebastianbergmann/recursion-context",
+            "time": "2015-06-21 08:04:50"
+        },
+        {
+            "name": "sebastian/resource-operations",
+            "version": "1.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/resource-operations.git",
+                "reference": "ce990bb21759f94aeafd30209e8cfcdfa8bc3f52"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/resource-operations/zipball/ce990bb21759f94aeafd30209e8cfcdfa8bc3f52",
+                "reference": "ce990bb21759f94aeafd30209e8cfcdfa8bc3f52",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.6.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                }
+            ],
+            "description": "Provides a list of PHP built-in functions that operate on resources",
+            "homepage": "https://www.github.com/sebastianbergmann/resource-operations",
+            "time": "2015-07-28 20:34:47"
+        },
+        {
+            "name": "sebastian/version",
+            "version": "1.0.6",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/version.git",
+                "reference": "58b3a85e7999757d6ad81c787a1fbf5ff6c628c6"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/version/zipball/58b3a85e7999757d6ad81c787a1fbf5ff6c628c6",
+                "reference": "58b3a85e7999757d6ad81c787a1fbf5ff6c628c6",
+                "shasum": ""
+            },
+            "type": "library",
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de",
+                    "role": "lead"
+                }
+            ],
+            "description": "Library that helps with managing the version number of Git-hosted PHP projects",
+            "homepage": "https://github.com/sebastianbergmann/version",
+            "time": "2015-06-21 13:59:46"
+        },
+        {
+            "name": "symfony/yaml",
+            "version": "v3.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/yaml.git",
+                "reference": "177a015cb0e19ff4a49e0e2e2c5fc1c1bee07002"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/yaml/zipball/177a015cb0e19ff4a49e0e2e2c5fc1c1bee07002",
+                "reference": "177a015cb0e19ff4a49e0e2e2c5fc1c1bee07002",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.5.9"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.0-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Yaml\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony Yaml Component",
+            "homepage": "https://symfony.com",
+            "time": "2015-11-30 12:36:17"
+        }
+    ],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": [],
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": {
+        "php": "~5.6"
+    },
+    "platform-dev": []
+}
diff --git a/lib/mysql.php b/lib/mysql.php
new file mode 100644
index 0000000..ecfb767
--- /dev/null
+++ b/lib/mysql.php
@@ -0,0 +1,416 @@
+<?php
+namespace {
+    if (!function_exists('\mysql_connect')) {
+        function mysql_connect(
+            $hostname = null,
+            $username = null,
+            $password = null,
+            $new = false,
+            $flags = 0)
+        {
+            if ($new !== false) {
+                trigger_error('Argument $new is no longer supported in PHP > 7', E_USER_WARNING);
+            }
+
+            if ($flags === 0) {
+                $conn = \Dshafik\MySQL::$last_connection = mysqli_connect($hostname, $username, $password);
+                return $conn;
+            }
+
+            try {
+                $conn = \Dshafik\MySQL::$last_connection = mysqli_init();
+
+                mysqli_options($conn, $flags);
+
+                mysqli_real_connect($conn, $hostname, $username, $password);
+
+                return $conn;
+            } catch (\Throwable $e) {
+                var_dump($e);
+            }
+        }
+
+        function mysql_pconnect(
+            $hostname = null,
+            $username = null,
+            $password = null,
+            $flags = 0)
+        {
+            $hostname = 'p:' . $hostname;
+            return mysql_connect($hostname, $username, $password, false, $flags);
+        }
+
+        function mysql_close(\mysqli $link = null)
+        {
+            $isDefault = ($link === null);
+
+            $link = \Dshafik\MySQL::getConnection($link, __FUNCTION__);
+            if ($link === null) {
+                return false;
+            }
+
+            $return = mysqli_close($link);
+            if ($isDefault) {
+                Dshafik\MySQL::$last_connection = null;
+            }
+            return $return;
+        }
+
+        function mysql_select_db($databaseName, \mysqli $link = null)
+        {
+            $link = \Dshafik\MySQL::getConnection($link);
+
+            return mysqli_query(
+                $link,
+                "USE " . mysqli_real_escape_string($link)
+            ) !== false;
+        }
+
+        function mysql_query($query, \mysqli $link = null)
+        {
+            return mysqli_query(\Dshafik\MySQL::getConnection($link), $query);
+        }
+
+        function mysql_unbuffered_query($query, \mysqli $link = null)
+        {
+            $link = \Dshafik\MySQL::getConnection($link);
+            mysqli_real_query($link, $query);
+            return $link;
+        }
+
+        function mysql_db_query($databaseName, $query, \mysqli $link = null)
+        {
+            mysql_select_db($databaseName, $link);
+            return mysql_query($query, $link);
+        }
+
+        function mysql_list_dbs(\mysqli $link = null)
+        {
+            return mysql_query("SHOW DATABASES", $link);
+        }
+
+        function mysql_list_tables(\mysqli $link = null)
+        {
+            return mysql_query("SHOW TABLES", \Dshafik\MySQL::getConnection($link));
+        }
+
+        function mysql_list_fields($databaseName, $tableName, \mysqli $link = null)
+        {
+            $link = \Dshafik\MySQL::getConnection($link);
+            return mysql_query(
+                "SHOW COLUMNS FROM " .
+                mysqli_real_escape_string($link, $databaseName) . "." .
+                mysqli_real_escape_string($link, $tableName),
+                $link
+            );
+        }
+
+        function mysql_list_processes(\mysqli $link = null)
+        {
+            return mysql_query("SHOW PROCESSLIST", $link);
+        }
+
+        function mysql_error(\mysqli $link = null)
+        {
+            return mysqli_error(\Dshafik\MySQL::getConnection($link));
+        }
+
+        function mysql_errno(\mysqli $link = null)
+        {
+            return mysqli_errno(\Dshafik\MySQL::getConnection($link));
+        }
+
+        function mysql_affected_rows(\mysqli $link = null)
+        {
+            return mysqli_affected_rows(\Dshafik\MySQL::getConnection($link));
+        }
+
+        function mysql_insert_id($link = null) /*|*/
+        {
+            return mysqli_insert_id(\Dshafik\MySQL::getConnection($link));
+        }
+
+        function mysql_result(\mysqli_result $result, $row, $field = 0)
+        {
+            if (!mysqli_data_seek($result, $row)) {
+                return false;
+            }
+
+            if ($row = mysqli_fetch_array($result) === false) {
+                return false;
+            }
+
+            if (isset($row[$field])) {
+                return $row[$field];
+            }
+
+            return false;
+        }
+
+        function mysql_num_rows(\mysqli_result $result)
+        {
+            return mysqli_num_rows($result);
+        }
+
+        function mysql_num_fields(\mysqli_result $result)
+        {
+            return mysqli_num_fields($result);
+        }
+
+        function mysql_fetch_row(\mysqli_result $result) /* : array|null */
+        {
+            return mysqli_fetch_row($result);
+        }
+
+        function mysql_fetch_array(\mysqli_result $result) /* : array|null */
+        {
+            return mysqli_fetch_array($result);
+        }
+
+        function mysql_fetch_assoc(\mysqli_result $result) /* : array|null */
+        {
+            return mysqli_fetch_assoc($result);
+        }
+
+        function mysql_fetch_object(\mysqli_result $result, $class, array $params = []) /* : object|null */
+        {
+            return mysqli_fetch_object($result, $class, $params);
+        }
+
+        function mysql_data_seek(\mysqli_result $result, $offset)
+        {
+            return mysqli_data_seek($result, $offset);
+        }
+
+        function mysql_fetch_lengths(\mysqli_result $result) /* : array|*/
+        {
+            return mysqli_fetch_lengths($result);
+        }
+
+        function mysql_fetch_field(\mysqli_result $result) /* : object|*/
+        {
+            return mysqli_fetch_field($result);
+        }
+
+        function mysql_field_seek(\mysqli_result $result, $field)
+        {
+            return mysqli_field_seek($result, $field);
+        }
+
+        function mysql_free_result(\mysqli_result $result)
+        {
+            return mysqli_free_result($result);
+        }
+
+        function mysql_field_name(\mysqli_result $result, $field)
+        {
+            return \Dshafik\MySQL::mysql_field_info($result, $field, 'name');
+        }
+
+        function mysql_field_table(\mysqli_result $result, $field)
+        {
+            return \Dshafik\MySQL::mysql_field_info($result, $field, 'table');
+        }
+
+        function mysql_field_len(\mysql_result $result, $field)
+        {
+            return \Dshafik\MySQL::mysql_field_info($result, $field, 'length');
+        }
+
+        function mysql_field_type(\mysql_result $result, $field)
+        {
+            return \Dshafik\MySQL::mysql_field_info($result, $field, 'type');
+        }
+
+        function mysql_field_flags(\mysql_result $result, $field)
+        {
+            return \Dshafik\MySQL::mysql_field_info($result, $field, 'flags');
+        }
+
+        function mysql_escape_string($unescapedString)
+        {
+            return mysql_real_escape_string($unescapedString, null);
+        }
+
+        function mysql_real_escape_string($unescapedString, \mysqli $link = null)
+        {
+            return mysqli_escape_string(\Dshafik\MySQL::getConnection($link), $unescapedString);
+        }
+
+        function mysql_stat(\mysqli $link = null)
+        {
+            return mysqli_stat(\Dshafik\MySQL::getConnection($link));
+        }
+
+        function mysql_thread_id(\mysqli $link = null)
+        {
+            return mysqli_thread_id(\Dshafik\MySQL::getConnection($link));
+        }
+
+        function mysql_client_encoding(\mysqli $link = null)
+        {
+            return mysqli_character_set_name(\Dshafik\MySQL::getConnection($link));
+        }
+
+        function mysql_ping(\mysqli $link = null)
+        {
+            return mysqli_ping($link);
+        }
+
+        function mysql_get_client_info(\mysqli $link = null)
+        {
+            return mysqli_get_client_info(\Dshafik\MySQL::getConnection($link));
+        }
+
+        function mysql_get_host_info(\mysqli $link = null)
+        {
+            return mysqli_get_host_info(\Dshafik\MySQL::getConnection($link));
+        }
+
+        function mysql_get_proto_info(\mysqli $link = null)
+        {
+            return mysqli_get_proto_info(\Dshafik\MySQL::getConnection($link));
+        }
+
+        function mysql_get_server_info(\mysqli $link = null)
+        {
+            return mysqli_get_server_info(\Dshafik\MySQL::getConnection($link));
+        }
+
+        function mysql_info(\mysqli $link = null)
+        {
+            return mysqli_info(\Dshafik\MySQL::getConnection($link));
+        }
+
+        function mysql_set_charset($charset, \mysqli $link = null)
+        {
+            return mysqli_set_charset(\Dshafik\MySQL::getConnection($link), $charset);
+        }
+
+        function mysql_db_name(\mysqli_result $result)
+        {
+            return mysqli_fetch_row($result)['Database'];
+        }
+
+        function mysql_table_name(\mysqli_result $result)
+        {
+            return mysqli_fetch_row($result)['Table'];
+        }
+
+        /* Aliases */
+
+        function mysql_fieldname(\mysqli_result $result)
+        {
+            return mysql_field_name($result);
+        }
+
+        function mysql_fieldtable(\mysqli_result $result)
+        {
+            return mysql_field_table($result);
+        }
+
+        function mysql_fieldlen(\mysqli_result $result)
+        {
+            return mysql_field_len($result);
+        }
+
+        function mysql_fieldtype(\mysqli_result $result)
+        {
+            return mysql_field_type($result);
+        }
+
+        function mysql_fieldflags(\mysqli_result $result)
+        {
+            return mysql_field_flags($result);
+        }
+
+        function mysql_selectdb($databaseName, \mysql $link = null)
+        {
+            return mysql_select_db($databaseName, $link);
+        }
+
+        function mysql_freeresult(\mysqli_result $result)
+        {
+            return mysql_free_result($result);
+        }
+
+        function mysql_numfields(\mysqli_result $result)
+        {
+            return mysql_num_fields($result);
+        }
+
+        function mysql_numrows(\mysqli_result $result)
+        {
+            return mysql_num_rows($result);
+        }
+
+        function mysql_listdbs(... $args)
+        {
+            return mysql_list_dbs(... $args);
+        }
+
+        function mysql_listtables(... $args)
+        {
+            return mysql_list_tables(... $args);
+        }
+
+        function mysql_listfields(... $args)
+        {
+            return mysql_list_fields(... $args);
+        }
+
+        function mysql_dbname(\mysqli_result $result)
+        {
+            return mysql_db_name($result);
+        }
+
+        function mysql_tablename(\mysqli_result $result)
+        {
+            return mysql_table_name($result);
+        }
+    }
+}
+
+namespace Dshafik {
+    class MySQL {
+        static public $last_connection = null;
+
+        static public function getConnection($link = null, $func = null)
+        {
+            if ($link !== null) {
+                return $link;
+            }
+
+            if (static::$last_connection === null) {
+                $err = "A link to the server could not be established";
+                if ($func !== null) {
+                    $err = $func . "(): no MySQL-Link resource supplied";
+                }
+                trigger_error($err, E_USER_WARNING);
+            }
+
+            return static::$last_connection;
+        }
+
+        static public function mysql_field_info(\mysqli_result $result, $field, $what)
+        {
+            $field = mysqli_fetch_field_direct($result, $field);
+            if ($field === false) {
+                trigger_error(
+                    E_WARNING,
+                    sprintf(
+                        "Field %d is invalid for MySQL result index %s",
+                        $field,
+                        spl_object_hash($result)
+                    )
+                );
+            }
+
+            if (isset($field->{$what})) {
+                return $field->{$what};
+            }
+
+            return false;
+        }
+    }
+}
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
new file mode 100644
index 0000000..d4470de
--- /dev/null
+++ b/phpunit.xml.dist
@@ -0,0 +1,20 @@
+<phpunit colors="true" verbose="true" bootstrap="tests/bootstrap.php">
+    <php>
+        <ini name="display_errors" value="on"/>
+    </php>
+    <logging>
+        <log type="coverage-html" target="build/coverage/report"/>
+        <log type="coverage-xml" target="build/coverage/xml"/>
+        <log type="coverage-clover" target="build/coverage/coverage.clover"/>
+    </logging>
+    <testsuites>
+        <testsuite name="Unit Test">
+            <directory>./tests</directory>
+        </testsuite>
+    </testsuites>
+    <filter>
+        <whitelist processUncoveredFilesFromWhitelist="true">
+            <directory suffix=".php">./lib</directory>
+        </whitelist>
+    </filter>
+</phpunit>
diff --git a/tests/MySqlShimTest.php b/tests/MySqlShimTest.php
new file mode 100644
index 0000000..4739558
--- /dev/null
+++ b/tests/MySqlShimTest.php
@@ -0,0 +1,204 @@
+<?php
+/**
+ * php7-mysql-shim
+ *
+ * @author Davey Shafik <dshafik@akamai.com>
+ * @copyright Copyright 2015 Akamai Technologies, Inc. All rights reserved.
+ * @license Apache 2.0
+ * @link https://github.com/akamai-open/php7-mysql-shim
+ * @link https://developer.akamai.com
+ */
+
+namespace Dshafik\MySQL\Tests;
+
+use function \mysql_connect;
+
+class MySqlShimTest extends \PHPUnit_Framework_TestCase
+{
+    static $host;
+    static $container;
+    static $bin = [];
+
+    public function test_mysql_connect()
+    {
+        $mysql = mysql_connect(static::$host, 'root');
+
+        $this->assertTrue(
+            is_resource($mysql) && get_resource_type($mysql) == 'mysql link'
+            ||
+            $mysql instanceof \mysqli
+        );
+    }
+
+    /**
+     * @expectedException \PHPUnit_Framework_Error_Warning
+     * @expectedExceptionMessageRegExp /^mysql(i?)_connect\(\): (\(HY000\/1045\): )?Access denied for user ''@'(.*?)' \(using password: NO\)$/
+     */
+    public function test_mysql_connect_fail()
+    {
+        $mysql = mysql_connect(static::$host);
+
+        $this->assertFalse($mysql);
+    }
+
+    public function test_mysql_query()
+    {
+        \mysql_connect(static::$host, 'root');
+        $result = \mysql_query("SELECT VERSION()");
+
+        $this->assertTrue(
+            is_resource($result) && get_resource_type($result) == 'mysql result'
+            || $result instanceof \mysqli_result
+        );
+    }
+
+    public function test_mysql_query_nodata()
+    {
+        \mysql_connect(static::$host, 'root');
+        $result = \mysql_query("SET @test = 'foo'");
+
+        $this->assertTrue($result);
+    }
+
+    public function test_mysql_query_fail()
+    {
+        \mysql_connect(static::$host, 'root');
+        $result = \mysql_query("SELECT VERSION(");
+
+        $this->assertFalse($result);
+    }
+
+    public function test_mysql_fetch_array()
+    {
+        \mysql_connect(static::$host, 'root');
+
+        $result = \mysql_query("SELECT 'test' AS col");
+
+        $row = \mysql_fetch_array($result);
+        $this->assertTrue(is_array($row));
+        $this->assertArrayHasKey(0, $row);
+        $this->assertEquals($row[0], 'test');
+        $this->assertArrayHasKey('col', $row);
+        $this->assertEquals($row['col'], 'test');
+    }
+
+    public function test_mysql_fetch_array_multirow()
+    {
+        \mysql_connect(static::$host, 'root');
+
+        $result = \mysql_query("SHOW DATABASES");
+
+        while ($row = \mysql_fetch_array($result)) {
+            $this->assertTrue(is_array($row));
+            $this->assertArrayHasKey(0, $row);
+            $this->assertTrue(in_array($row[0], ["information_schema", "mysql", "performance_schema", "sys"]));
+            $this->assertArrayHasKey('Database', $row);
+            $this->assertTrue(in_array($row['Database'], ["information_schema", "mysql", "performance_schema", "sys"]));
+        }
+    }
+
+    public function test_mysql_num_rows()
+    {
+        \mysql_connect(static::$host, 'root');
+
+        $result = \mysql_query("SHOW DATABASES");
+
+        $this->assertEquals(4, \mysql_num_rows($result));
+    }
+
+    public function test_mysql_close()
+    {
+        \mysql_connect(static::$host, 'root');
+        $this->assertTrue(\mysql_close());
+    }
+
+    /**
+     * @expectedException \PHPUnit_Framework_Error_Warning
+     * @expectedExceptionMessage mysql_close(): no MySQL-Link resource supplied
+     */
+    public function test_mysql_close_fail()
+    {
+        $this->assertFalse(\mysql_close());
+    }
+
+    public function tearDown()
+    {
+        @\mysql_close();
+    }
+
+    public static function setUpBeforeClass()
+    {
+        fwrite(STDERR, "=> Finding binaries\n");
+        static::$bin['dm'] = $dm = exec('/usr/bin/env which docker-machine');
+        static::$bin['docker'] = $docker = exec('/usr/bin/env which docker');
+        if (empty($dm) && empty($docker)) {
+            static::markTestSkipped('Docker is required to run these tests');
+        }
+
+        if (!empty($dm)) {
+
+            fwrite(STDERR, "=> Starting Docker Machine\n");
+            exec($dm . ' create -d virtualbox mysql-shim');
+            exec($dm . ' start mysql-shim');
+
+            $env = '';
+            exec($dm . ' env mysql-shim', $env);
+            foreach ($env as $line) {
+                if ($line{0} !== '#') {
+                    putenv(str_replace(["export ", '"'], "", $line));
+                }
+            }
+        }
+
+        fwrite(STDERR, "=> Running Docker Container: ");
+        static::$container = exec($docker . ' run -e MYSQL_ALLOW_EMPTY_PASSWORD=1 -P -d  mysql/mysql-server');
+
+        if (empty(static::$container)) {
+            static::markTestSkipped("Unable to start docker container");
+        }
+
+        fwrite(STDERR, static::$container . "\n");
+
+        fwrite(STDERR, "=> Finding MySQL Host: ");
+        static::$host = exec($docker . ' port ' . self::$container . ' 3306');
+        fwrite(STDERR, static::$host . "\n");
+
+        if (!empty($dm)) {
+            fwrite(STDERR, "=> Using Docker Machine IP: ");
+            $info = explode(':', static::$host);
+            $port = array_pop($info);
+            static::$host = exec($dm . ' ip mysql-shim') . ':' . $port;
+            fwrite(STDERR, static::$host . "\n");
+        }
+
+        fwrite(STDERR, "=> Waiting on mysqld to start:");
+        $out = '';
+        while (trim($out) != 'mysqld') {
+            $out = exec(static::$bin['docker'] . ' exec ' . static::$container . ' ps ax | awk \'/mysqld/ {print $NF}\'');
+        }
+        fwrite(STDERR, " started\n");
+
+        fwrite(STDERR, "=> Docker Container Running\n\n");
+
+        error_reporting(E_ALL & ~E_DEPRECATED);
+
+        sleep(3);
+    }
+
+    public static function tearDownAfterClass()
+    {
+        fwrite(STDERR, "\n\nStopping Docker Container: ");
+        $output = exec(static::$bin['docker'] . ' stop ' .static::$container);
+        if (trim($output) !== static::$container) {
+            fwrite(STDERR, " Failed to stop container!\n");
+            return;
+        }
+
+        $output = exec(static::$bin['docker'] . ' rm ' .static::$container);
+        if (trim($output) !== static::$container) {
+            fwrite(STDERR, " Failed to remove container!\n");
+            return;
+        }
+        fwrite(STDERR, "Done\n");
+    }
+}
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
new file mode 100644
index 0000000..f9e62ac
--- /dev/null
+++ b/tests/bootstrap.php
@@ -0,0 +1,2 @@
+<?php
+require_once __DIR__ . '/../vendor/autoload.php';