minor #13862 [2.3] [Config] [Console] [DependencyInjection] [DomCrawler] [Form] [HttpKernel] [PropertyAccess] [Security] [Translation] [Yaml] static code analysis, code cleanup (kalessil)

This PR was squashed before being merged into the 2.3 branch (closes #13862).

Discussion
----------

[2.3] [Config] [Console] [DependencyInjection] [DomCrawler] [Form] [HttpKernel] [PropertyAccess] [Security] [Translation] [Yaml] static code analysis, code cleanup

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | n/a
| License       | MIT
| Doc PR        | n/a

Split <a href="https://github.com/symfony/symfony/pull/13813">PR 13813</a>: part 1 - targeting v2.3

Following is included (no functional changes, found with <a href="https://plugins.jetbrains.com/plugin/7622?pr=phpStorm">Php Inspections (EA Extended)</a>):
- Fixed couple of concatenation as array index warnings
- Unset calls can be merged inspection fixes
- array_search in in_array context inspection fixes
- Is null usage inspection fixes
- Prefixed increment/decrement inspection fixes
- Elvis operator can be used inspection fixes
- Alias functions usage inspection fixes
- Ternary operator simplification inspection fixes
- _ _ DIR _ _ equivalent inspection fixes

Commits
-------

f13b5f7 [2.3] [Config] [Console] [DependencyInjection] [DomCrawler] [Form] [HttpKernel] [PropertyAccess] [Security] [Translation] [Yaml] static code analysis, code cleanup

1 files changed, 4 insertions, 4 deletions

diff --git a/Tests/Core/Util/SecureRandomTest.php b/Tests/Core/Util/SecureRandomTest.php
index bd9fec5..a8cc660 100644
--- a/Tests/Core/Util/SecureRandomTest.php
+++ b/Tests/Core/Util/SecureRandomTest.php
@@ -41,7 +41,7 @@ class SecureRandomTest extends \PHPUnit_Framework_TestCase
 
         for ($j = 1; $j <= 5000; $j++) {
             $k = 4 * $j - 1;
-            $c[8 * $b[$k - 3] + 4 * $b[$k - 2] + 2 * $b[$k - 1] + $b[$k]] += 1;
+            ++$c[8 * $b[$k - 3] + 4 * $b[$k - 2] + 2 * $b[$k - 1] + $b[$k]];
         }
 
         $f = 0;
@@ -73,14 +73,14 @@ class SecureRandomTest extends \PHPUnit_Framework_TestCase
                 $run = 6;
             }
 
-            $runs[$run] += 1;
+            ++$runs[$run];
         };
 
         $currentRun = 0;
         $lastBit = null;
         for ($i = 0; $i < 20000; $i++) {
             if ($lastBit === $b[$i]) {
-                $currentRun += 1;
+                ++$currentRun;
             } else {
                 if ($currentRun > 0) {
                     $addRun($currentRun);
@@ -115,7 +115,7 @@ class SecureRandomTest extends \PHPUnit_Framework_TestCase
         $lastBit = null;
         for ($i = 0; $i < 20000; $i++) {
             if ($lastBit === $b[$i]) {
-                $currentRun += 1;
+                ++$currentRun;
             } else {
                 if ($currentRun > $longestRun) {
                     $longestRun = $currentRun;