3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php define('MAX_LOOPS',5); function withRefValue($elements, $transform) { echo "\n---( Array with $elements element(s): )---\n";     //Build array:     for ($i=0; $i<$elements; $i++) {         $a[] = "v.$i";     }     $counter=0;     echo "--> State of array before loop:\n";     var_dump($a);     echo "--> Do loop:\n";     foreach ($a as $k=>&$v) {         echo "     iteration $counter:  \$k=$k; \$v=$v\n";         eval($transform);         $counter++;         if ($counter>MAX_LOOPS) {             echo "  ** Stuck in a loop! **\n";             break;         }     }     echo "--> State of array after loop:\n";     var_dump($a); } echo "\nPopping elements off end of an unreferenced array, using &\$value."; $transform = 'array_pop($a);'; withRefValue(1, $transform); withRefValue(2, $transform); withRefValue(3, $transform); withRefValue(4, $transform);
based on rUnnu
Output for 5.4.0 - 5.4.32
Parse error: syntax error, unexpected ' ' (T_STRING) in /in/WX50c on line 8
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected T_STRING in /in/WX50c on line 8
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_STRING in /in/WX50c on line 8
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/WX50c on line 8
Process exited with code 255.