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<?php $array = [ [1, 'xxx', 'yyy'], [2, 'xxx', 'yyy'], [3, 'xxx', 'yyy'], [4, 'xxx', 'yyy'], [5, 'xxx', 'yyy'], [6, 'xxx', 'yyy'], [7, 'xxx', 'yyy'], [8, 'xxx', 'yyy'], [9, 'xxx', 'yyy'], [10, 'xxx', 'yyy'], [11, 'xxx', 'yyy'], [12, 'xxx', 'yyy'], [13, 'xxx', 'yyy'], [14, 'xxx', 'yyy'], [15, 'xxx', 'yyy'], [16, 'xxx', 'yyy'], [17, 'xxx', 'yyy'], [18, 'xxx', 'yyy'], [19, 'xxx', 'yyy'] ]; $t = microtime(true); $result = array_map(function($v){ return $v[0]; }, $array); echo microtime(true) - $t, PHP_EOL; $t = microtime(true); $result = array(); foreach($array as $v)$result[] = $v[0]; echo microtime(true) - $t, PHP_EOL; ?>
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 23, Position 2 = 28
Branch analysis from position: 23
2 jumps found. (Code = 78) Position 1 = 24, Position 2 = 28
Branch analysis from position: 24
1 jumps found. (Code = 42) Position 1 = 23
Branch analysis from position: 23
Branch analysis from position: 28
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 28
filename:       /in/JViKY
function name:  (null)
number of ops:  36
compiled vars:  !0 = $array, !1 = $t, !2 = $result, !3 = $v
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   3     0  E >   QM_ASSIGN                                                !0
  24     1        INIT_FCALL                                               'microtime'
         2        SEND_VAL                                                 <true>
         3        DO_ICALL                                         $5      
         4        QM_ASSIGN                                                !1
  26     5        INIT_FCALL                                               'array_map'
         6        RAISE_ABSTRACT_ERROR                             ~7      '%00%7Bclosure%7D%2Fin%2FJViKY0x7fc54c07a21a'
         7        SEND_VAL                                                 ~7
         8        SEND_VAR                                                 !0
         9        DO_ICALL                                         $8      
        10        QM_ASSIGN                                                !2
  28    11        INIT_FCALL                                               'microtime'
        12        SEND_VAL                                                 <true>
        13        DO_ICALL                                         $10     
        14        SUB                                              ~11     $10, !1
        15        ASSIGN_OBJ                                               ~11
        16        ASSIGN_OBJ                                               '%0A'
  30    17        INIT_FCALL                                               'microtime'
        18        SEND_VAL                                                 <true>
        19        DO_ICALL                                         $12     
        20        QM_ASSIGN                                                !1
  32    21        QM_ASSIGN                                                !2
  34    22      > FE_RESET_R                                       $15     !0, ->28
        23    > > FE_FETCH_R                                               $15, !3, ->28
        24    >   FETCH_DIM_R                                      ~17     !3, 0
        25        ASSIGN_ADD                                    0          !2
        26        OP_DATA                                                  ~17
        27      > JMP                                                      ->23
        28    >   FE_FREE                                                  $15
  36    29        INIT_FCALL                                               'microtime'
        30        SEND_VAL                                                 <true>
        31        DO_ICALL                                         $18     
        32        SUB                                              ~19     $18, !1
        33        ASSIGN_OBJ                                               ~19
        34        ASSIGN_OBJ                                               '%0A'
  38    35      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FJViKY0x7fc54c07a21a:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/JViKY
function name:  {closure}
number of ops:  4
compiled vars:  !0 = $v
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
  26     0  E >   RECV                                             !0      
         1        FETCH_DIM_R                                      ~1      !0, 0
         2      > RETURN                                                   ~1
         3*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FJViKY0x7fc54c07a21a

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