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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().'<br>'; // 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 = 22
Branch analysis from position: 22
2 jumps found. (Code = 44) Position 1 = 24, Position 2 = 19
Branch analysis from position: 24
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 19
2 jumps found. (Code = 44) Position 1 = 24, Position 2 = 19
Branch analysis from position: 24
Branch analysis from position: 19
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/e0RD3
function name:  (null)
number of ops:  29
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        CONCAT                                           ~9      ~8, '%3Cbr%3E'
         12        ECHO                                                     ~9
   10    13        NEW                                              $10     'SplFixedArray'
         14        SEND_VAL_EX                                              1048576
         15        DO_FCALL                                      0          
         16        ASSIGN                                                   !0, $10
   11    17        ASSIGN                                                   !1, 0
         18      > JMP                                                      ->22
   12    19    >   ASSIGN_DIM                                               !0, !1
         20        OP_DATA                                                  0
   11    21        PRE_INC                                                  !1
         22    >   IS_SMALLER                                               !1, 1048576
         23      > JMPNZ                                                    ~16, ->19
   14    24    >   INIT_FCALL                                               'memory_get_peak_usage'
         25        DO_ICALL                                         $17     
         26        CONCAT                                           ~18     'SplFixedArray%3A+', $17
         27        ECHO                                                     ~18
         28      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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173.39 ms | 1396 KiB | 15 Q