3v4l.org

run code in 300+ PHP versions simultaneously
<?php $s = 1; namespace foo { $start = microtime(true); $i = $s; while($i--) { $a = true; } $end = microtime(true); echo 'Namespace true: ' . ($end-$start); $i = $s; while($i--) { $a = \true; } $end = microtime(true); echo 'Namespace \true: ' . ($end-$start); } namespace { echo 1; }
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.32
Fatal error: Namespace declaration statement has to be the very first statement in the script in /in/3O8QP on line 5
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_STRING in /in/3O8QP on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_STRING in /in/3O8QP on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/3O8QP on line 5
Process exited with code 255.
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