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<?php // 标准array $array = array(1024 * 1024); // array(); for ($i = 0; $i < 1024 * 1024; ++$i) $array[$i] = 0; echo 'Standard array: '.memory_get_peak_usage(); // spl $array = new SplFixedArray(1024 * 1024); // array(); for ($i = 0; $i < 1024 * 1024; ++$i) $array[$i] = 0; echo 'SplFixedArray: '.memory_get_peak_usage();
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 6
Branch analysis from position: 6
2 jumps found. (Code = 44) Position 1 = 8, Position 2 = 3
Branch analysis from position: 8
1 jumps found. (Code = 42) Position 1 = 21
Branch analysis from position: 21
2 jumps found. (Code = 44) Position 1 = 23, Position 2 = 18
Branch analysis from position: 23
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 18
2 jumps found. (Code = 44) Position 1 = 23, Position 2 = 18
Branch analysis from position: 23
Branch analysis from position: 18
Branch analysis from position: 3
2 jumps found. (Code = 44) Position 1 = 8, Position 2 = 3
Branch analysis from position: 8
Branch analysis from position: 3
filename:       /in/pFSql
function name:  (null)
number of ops:  28
compiled vars:  !0 = $array, !1 = $i
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        ASSIGN                                                   !1, 0
          2      > JMP                                                      ->6
    5     3    >   ASSIGN_DIM                                               !0, !1
          4        OP_DATA                                                  0
    4     5        PRE_INC                                                  !1
          6    >   IS_SMALLER                                               !1, 1048576
          7      > JMPNZ                                                    ~6, ->3
    7     8    >   INIT_FCALL                                               'memory_get_peak_usage'
          9        DO_ICALL                                         $7      
         10        CONCAT                                           ~8      'Standard+array%3A+', $7
         11        ECHO                                                     ~8
   10    12        NEW                                              $9      'SplFixedArray'
         13        SEND_VAL_EX                                              1048576
         14        DO_FCALL                                      0          
         15        ASSIGN                                                   !0, $9
   11    16        ASSIGN                                                   !1, 0
         17      > JMP                                                      ->21
   12    18    >   ASSIGN_DIM                                               !0, !1
         19        OP_DATA                                                  0
   11    20        PRE_INC                                                  !1
         21    >   IS_SMALLER                                               !1, 1048576
         22      > JMPNZ                                                    ~15, ->18
   14    23    >   INIT_FCALL                                               'memory_get_peak_usage'
         24        DO_ICALL                                         $16     
         25        CONCAT                                           ~17     'SplFixedArray%3A+', $16
         26        ECHO                                                     ~17
         27      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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