3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $vals = [['id' => 1], ['id' => 2], ['id' => 3], ['id' => 4]]; print join(', ', array_map(function ($val) {return $val['id'];}, $vals));
based on TaA8F
Finding entry points
Branch analysis from position: 0
Jump found. Position 1 = -2
filename:       /in/8WFBD
function name:  (null)
number of ops:  12
compiled vars:  !0 = $vals
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   3     0  E >   ASSIGN                                                   !0, <array>
   4     1        INIT_FCALL                                               'join'
         2        SEND_VAL                                                 '%2C+'
         3        INIT_FCALL                                               'array_map'
         4        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2F8WFBD0x7f4c74b12083'
         5        SEND_VAL                                                 ~2
         6        SEND_VAR                                                 !0
         7        DO_ICALL                                         $3      
         8        SEND_VAR                                                 $3
         9        DO_ICALL                                         $4      
        10        ECHO                                                     $4
        11      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2F8WFBD0x7f4c74b12083:
Finding entry points
Branch analysis from position: 0
Jump found. Position 1 = -2
filename:       /in/8WFBD
function name:  {closure}
number of ops:  4
compiled vars:  !0 = $val
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
         0  E >   RECV                                             !0      
         1        FETCH_DIM_R                                      $1      !0, 'id'
         2      > RETURN                                                   $1
         3*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2F8WFBD0x7f4c74b12083

Generated using Vulcan Logic Dumper, using php 7.3.0