3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array('key' => 'value'); //array_map(function($k, $v){var_dump($k, $v);}, array_keys($arr), $arr); array_map(function(&$a){ var_dump(key($a)); }, $arr);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/P2ul8
function name:  (null)
number of ops:  7
compiled vars:  !0 = $arr
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    5     1        INIT_FCALL                                               'array_map'
          2        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FP2ul8%3A5%240'
    8     3        SEND_VAL                                                 ~2
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                                 
          6      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FP2ul8%3A5%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/P2ul8
function name:  {closure}
number of ops:  8
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   RECV                                             !0      
    7     1        INIT_FCALL                                               'var_dump'
          2        INIT_FCALL                                               'key'
          3        SEND_VAR                                                 !0
          4        DO_ICALL                                         $1      
          5        SEND_VAR                                                 $1
          6        DO_ICALL                                                 
    8     7      > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FP2ul8%3A5%240

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
157.35 ms | 1386 KiB | 19 Q