3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $string = '763:74 74:274 177:474'; $result = []; preg_replace_callback('/(\d+):(\d+)/m',function($m,&$result){ $result[$m[1]] = $m[2]; },$string); print_r($result); echo $result[74]."\n"; echo $result[763]."\n";
based on NYgCE
Output for 7.1.0 - 7.2.0
Fatal error: Uncaught ArgumentCountError: Too few arguments to function {closure}(), 1 passed and exactly 2 expected in /in/17upY:8 Stack trace: #0 [internal function]: {closure}(Array) #1 /in/17upY(10): preg_replace_callback('/(\\d+):(\\d+)/m', Object(Closure), '763:74\n74:274\n1...') #2 {main} thrown in /in/17upY on line 8
Process exited with code 255.
Output for 5.4.9 - 7.0.20
Warning: Missing argument 2 for {closure}() in /in/17upY on line 8 Warning: Missing argument 2 for {closure}() in /in/17upY on line 8 Warning: Missing argument 2 for {closure}() in /in/17upY on line 8 Array ( ) Notice: Undefined offset: 74 in /in/17upY on line 13 Notice: Undefined offset: 763 in /in/17upY on line 14
Output for 5.3.19 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/17upY on line 7
Process exited with code 255.