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<?php ini_set('memory_limit', '512M'); echo "Memory limit: ", ini_get('memory_limit'), "\n\n"; $finfo = new finfo(FILEINFO_MIME_TYPE); $minSize = 128 * 1024; $maxSize = 16 * 1024 * 1024; for($size = $minSize; $size <= $maxSize; $size *= 2) { $file = tempnam('/tmp', 'finfo'); file_put_contents($file, str_repeat('0', $size)); echo "Content size: ", number_format(filesize($file)/1024/1024, 1), "M\n"; $finfo->file($file); echo "Peak memory usage: ", number_format(memory_get_peak_usage(true)/1024/1024, 1), "M\n\n"; }
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 59
Branch analysis from position: 59
2 jumps found. (Code = 44) Position 1 = 61, Position 2 = 18
Branch analysis from position: 61
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 18
2 jumps found. (Code = 44) Position 1 = 61, Position 2 = 18
Branch analysis from position: 61
Branch analysis from position: 18
filename:       /in/M3YLG
function name:  (null)
number of ops:  62
compiled vars:  !0 = $finfo, !1 = $minSize, !2 = $maxSize, !3 = $size, !4 = $file
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'ini_set'
          1        SEND_VAL                                                 'memory_limit'
          2        SEND_VAL                                                 '512M'
          3        DO_ICALL                                                 
    4     4        ECHO                                                     'Memory+limit%3A+'
          5        INIT_FCALL                                               'ini_get'
          6        SEND_VAL                                                 'memory_limit'
          7        DO_ICALL                                         $6      
          8        ECHO                                                     $6
          9        ECHO                                                     '%0A%0A'
    6    10        NEW                                              $7      'finfo'
         11        SEND_VAL_EX                                              16
         12        DO_FCALL                                      0          
         13        ASSIGN                                                   !0, $7
    7    14        ASSIGN                                                   !1, 131072
    8    15        ASSIGN                                                   !2, 16777216
    9    16        ASSIGN                                                   !3, !1
         17      > JMP                                                      ->59
   10    18    >   INIT_FCALL                                               'tempnam'
         19        SEND_VAL                                                 '%2Ftmp'
         20        SEND_VAL                                                 'finfo'
         21        DO_ICALL                                         $13     
         22        ASSIGN                                                   !4, $13
   11    23        INIT_FCALL                                               'file_put_contents'
         24        SEND_VAR                                                 !4
         25        INIT_FCALL                                               'str_repeat'
         26        SEND_VAL                                                 '0'
         27        SEND_VAR                                                 !3
         28        DO_ICALL                                         $15     
         29        SEND_VAR                                                 $15
         30        DO_ICALL                                                 
   12    31        ECHO                                                     'Content+size%3A+'
         32        INIT_FCALL                                               'number_format'
         33        INIT_FCALL                                               'filesize'
         34        SEND_VAR                                                 !4
         35        DO_ICALL                                         $17     
         36        DIV                                              ~18     $17, 1024
         37        DIV                                              ~19     ~18, 1024
         38        SEND_VAL                                                 ~19
         39        SEND_VAL                                                 1
         40        DO_ICALL                                         $20     
         41        ECHO                                                     $20
         42        ECHO                                                     'M%0A'
   15    43        INIT_METHOD_CALL                                         !0, 'file'
         44        SEND_VAR_EX                                              !4
         45        DO_FCALL                                      0          
   16    46        ECHO                                                     'Peak+memory+usage%3A+'
         47        INIT_FCALL                                               'number_format'
         48        INIT_FCALL                                               'memory_get_peak_usage'
         49        SEND_VAL                                                 <true>
         50        DO_ICALL                                         $22     
         51        DIV                                              ~23     $22, 1024
         52        DIV                                              ~24     ~23, 1024
         53        SEND_VAL                                                 ~24
         54        SEND_VAL                                                 1
         55        DO_ICALL                                         $25     
         56        ECHO                                                     $25
         57        ECHO                                                     'M%0A%0A'
    9    58        ASSIGN_OP                                     3          !3, 2
         59    >   IS_SMALLER_OR_EQUAL                                      !3, !2
         60      > JMPNZ                                                    ~27, ->18
   17    61    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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