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<?php $m1 = str_repeat("\x80", 32); $m2 = str_repeat("\x80", 33554432); $end1 = $end2 = $start = microtime(true); $hash1 = hash('sha256', $m1); $end1 = microtime(true); $hash2 = hash('sha256', $m2); $end2 = microtime(true); var_dump( number_format($end1 - $start, 5), number_format($end2 - $start, 5) );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/8tjrs
function name:  (null)
number of ops:  49
compiled vars:  !0 = $m1, !1 = $m2, !2 = $end1, !3 = $end2, !4 = $start, !5 = $hash1, !6 = $hash2
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'str_repeat'
          1        SEND_VAL                                                 '%80'
          2        SEND_VAL                                                 32
          3        DO_ICALL                                         $7      
          4        ASSIGN                                                   !0, $7
    4     5        INIT_FCALL                                               'str_repeat'
          6        SEND_VAL                                                 '%80'
          7        SEND_VAL                                                 33554432
          8        DO_ICALL                                         $9      
          9        ASSIGN                                                   !1, $9
    6    10        INIT_FCALL                                               'microtime'
         11        SEND_VAL                                                 <true>
         12        DO_ICALL                                         $11     
         13        ASSIGN                                           ~12     !4, $11
         14        ASSIGN                                           ~13     !3, ~12
         15        ASSIGN                                                   !2, ~13
    7    16        INIT_FCALL                                               'hash'
         17        SEND_VAL                                                 'sha256'
         18        SEND_VAR                                                 !0
         19        DO_ICALL                                         $15     
         20        ASSIGN                                                   !5, $15
    8    21        INIT_FCALL                                               'microtime'
         22        SEND_VAL                                                 <true>
         23        DO_ICALL                                         $17     
         24        ASSIGN                                                   !2, $17
    9    25        INIT_FCALL                                               'hash'
         26        SEND_VAL                                                 'sha256'
         27        SEND_VAR                                                 !1
         28        DO_ICALL                                         $19     
         29        ASSIGN                                                   !6, $19
   10    30        INIT_FCALL                                               'microtime'
         31        SEND_VAL                                                 <true>
         32        DO_ICALL                                         $21     
         33        ASSIGN                                                   !3, $21
   12    34        INIT_FCALL                                               'var_dump'
   13    35        INIT_FCALL                                               'number_format'
         36        SUB                                              ~23     !2, !4
         37        SEND_VAL                                                 ~23
         38        SEND_VAL                                                 5
         39        DO_ICALL                                         $24     
         40        SEND_VAR                                                 $24
   14    41        INIT_FCALL                                               'number_format'
         42        SUB                                              ~25     !3, !4
         43        SEND_VAL                                                 ~25
         44        SEND_VAL                                                 5
         45        DO_ICALL                                         $26     
         46        SEND_VAR                                                 $26
         47        DO_ICALL                                                 
   15    48      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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