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<?php $array = [ [1, 2, 3], [4, 5, 6] ]; var_export( array_map( 'array_merge', array_fill(0, count($array), ['X']), $array ) );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/3GLFv
function name:  (null)
number of ops:  16
compiled vars:  !0 = $array
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    7     1        INIT_FCALL                                               'var_export'
    8     2        INIT_FCALL                                               'array_map'
    9     3        SEND_VAL                                                 'array_merge'
   10     4        INIT_FCALL                                               'array_fill'
          5        SEND_VAL                                                 0
          6        COUNT                                            ~2      !0
          7        SEND_VAL                                                 ~2
          8        SEND_VAL                                                 <array>
          9        DO_ICALL                                         $3      
         10        SEND_VAR                                                 $3
   11    11        SEND_VAR                                                 !0
    8    12        DO_ICALL                                         $4      
   11    13        SEND_VAR                                                 $4
    7    14        DO_ICALL                                                 
   13    15      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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