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<?php
class TestBaseHelper
{
private $_dbsm, $_host, $_db_name, $_user, $_password, $_table_name;
private $_PDO = null;
private $_fields;
public function __construct($configs = array())
{
$this->_dbsm = isset($configs["dbsm"]) ? $configs["dbsm"] : "mysql";
$this->_host = isset($configs["host"]) ? $configs["host"] : "localhost";
$this->_db_name = $configs["db_name"];
$this->_user = $configs["user"];
$this->_password = $configs["password"];
$this->_table_name = $configs["table_name"];
$this->_fields = $configs["fields"];
}
private function getConnection()
{
$PDO_options = array(
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC
);
$dsn = $this->_dbsm . ":host=" . $this->_host . ";dbname=" . $this->_db_name;
$this->_PDO = ($this->_PDO) ? $this->_PDO : new PDO($dsn, $this->_user, $this->_password,$PDO_options);
return $this->_PDO;
}
private function closeConnection()
{
unset($this->_PDO);
$this->_PDO = null;
}
public function dropTable()
{
$conn = $this->getConnection();
$conn->prepare("DROP TABLE IF EXISTS `$this->_table_name`;")->execute();
$this->closeConnection();
}
public function resetTable()
{
$this->dropTable();
$conn = $this->getConnection();
$sql = "CREATE TABLE `$this->_table_name`(";
$f = $this->_fields;
$fieldsCount = count($f);
$elNumb = 1;
foreach($f as $name=>$type) {
$sql .= "`$name` $type";
if ($elNumb++ != $fieldsCount)
$sql .= ",";
}
$sql .= ");";
$conn->prepare($sql)->execute();
$this->closeConnection();
}
public function insertDataFromJSON($data){
$f = $this->_fields;
$fieldsCount = count($f);
$sql = "INSERT INTO `$this->_table_name`(";
$elNumb = 1;
foreach($f as $name=>$type) {
$sql .= "`$name`";
if ($elNumb++ != $fieldsCount)
$sql .= ",";
}
$sql.= ") VALUES ";
$evsCount = count($data);
for($i = 0; $i < $evsCount; $i++) {
$sql .= "(";
$event = $data[$i];
$elNumb = 1;
foreach($f as $name=>$type) {
$sql .= isset($event[$name]) && !is_null($event[$name]) ? "'".$event[$name]."'":"NULL";
if ($elNumb++ != $fieldsCount)
$sql .= ",";
}
$sql.=")";
if($i + 1 != $evsCount)
$sql.=",";
}
$sql .= ";";
$conn = $this->getConnection();
$conn->prepare($sql)->execute();
$this->closeConnection();
}
public function getDataFromBase($id = NULL){
$sql = "SELECT * FROM $this->_table_name";
if(!is_null($id)){
$sql .= " WHERE id=$id";
}
$conn = $this->getConnection()->prepare($sql);
$conn->execute();
$data = $conn->fetchAll();
$this->closeConnection();
return $data;
}
}
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