3v4l.org

run code in 300+ PHP versions simultaneously
<?php set_error_handler(function($errno, $errstr) { $bt = debug_backtrace(); var_dump($errstr); }); $displays = array( array( 'position' => 0, ), array( 'position' => NULL, ), ); // Sort the displays. uasort($displays, function ($display1, $display2) { if ($display1['position'] != $display2['position']) { trigger_error('test'); return $display1['position'] < $display2['position'] ? -1 : 1; } return 0; });

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32.23 ms | 402 KiB | 5 Q