3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $max = 1000000;     $arr = range(1,$max,3);     $arr2 = range(1,$max,2);     $arr = array_merge($arr,$arr2);     $time = -microtime(true);     $res1 = array_unique($arr);     $time += microtime(true);     echo "deduped to ".count($res1)." in ".$time;     // deduped to 666667 in 32.300781965256     $time = -microtime(true);     $res2 = array();     foreach($arr as $key=>$val) {            $res2[$val] = true;     }     $res2 = array_keys($res2);     $time += microtime(true);     echo "<br />deduped to ".count($res2)." in ".$time;     // deduped to 666667 in 0.84372591972351 
Output for 5.4.0 - 5.4.31
Parse error: syntax error, unexpected '  ' (T_STRING) in /in/CBKri on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.28
Parse error: syntax error, unexpected T_STRING in /in/CBKri on line 2
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/CBKri on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/CBKri on line 2
Process exited with code 255.