3v4l.org

run code in 300+ PHP versions simultaneously
<?php $keys = [ 'staff_first_name' => null, 'staff_last_name' => null, 'staff_years' => null ]; $submitted_values = [ 'first_name' => 'jon', 'last_name' => 'doe', 'years' => 5 ]; foreach ($keys as $key => &$value) { $value = $submitted_values[substr($key, 6)] ?? $value; } var_export($keys);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 125) Position 1 = 3, Position 2 = 14
Branch analysis from position: 3
2 jumps found. (Code = 126) Position 1 = 4, Position 2 = 14
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 14
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 14
filename:       /in/3dAV0
function name:  (null)
number of ops:  19
compiled vars:  !0 = $keys, !1 = $submitted_values, !2 = $value, !3 = $key
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    9     1        ASSIGN                                                   !1, <array>
   15     2      > FE_RESET_RW                                      $6      !0, ->14
          3    > > FE_FETCH_RW                                      ~7      $6, !2, ->14
          4    >   ASSIGN                                                   !3, ~7
   16     5        INIT_FCALL                                               'substr'
          6        SEND_VAR                                                 !3
          7        SEND_VAL                                                 6
          8        DO_ICALL                                         $9      
          9        FETCH_DIM_IS                                     ~10     !1, $9
         10        COALESCE                                         ~11     ~10
         11        QM_ASSIGN                                        ~11     !2
         12        ASSIGN                                                   !2, ~11
   15    13      > JMP                                                      ->3
         14    >   FE_FREE                                                  $6
   18    15        INIT_FCALL                                               'var_export'
         16        SEND_VAR                                                 !0
         17        DO_ICALL                                                 
         18      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
142.43 ms | 945 KiB | 18 Q