TYPO3 Core

Quick comparison:

• method 1

  $explodedValues = explode($delimiter, strrev($string), $count);
  $explodedValues = array_map('strrev', $explodedValues);
  $foo = array_reverse($explodedValues);

• method 2

  $pos = strrpos($string, $delimiter);
  $explodedValues = array(substr($string, 0, $pos), substr($string, $pos + 1));

Benchmark with these values:

$delimiter = '/';
$string = '/dir1/dir2/someFile.php';
$count = 2;

Results for 100.000 executions, average over 10 runs:

• method 1: 0.55020709037781
• method 2: 0.24021787643433 (43 % of method 1)

Patch set 2 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/27255

Patch set 3 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/27255

Patch set 4 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/27255

Regression in #55838

Another severe regression in #56405