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<?php $packed = pack('h*', dechex(PHP_INT_MAX)); $packed = str_pad($packed, 64, "\x00", STR_PAD_RIGHT); $v = unpack('h*', $packed); $v = hexdec($v[1]); var_dump($packed); var_dump($v); var_dump(PHP_INT_MAX);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/hU21o
function name:  (null)
number of ops:  35
compiled vars:  !0 = $packed, !1 = $v
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'pack'
          1        SEND_VAL                                                 'h%2A'
          2        INIT_FCALL                                               'dechex'
          3        SEND_VAL                                                 9223372036854775807
          4        DO_ICALL                                         $2      
          5        SEND_VAR                                                 $2
          6        DO_ICALL                                         $3      
          7        ASSIGN                                                   !0, $3
    3     8        INIT_FCALL                                               'str_pad'
          9        SEND_VAR                                                 !0
         10        SEND_VAL                                                 64
         11        SEND_VAL                                                 '%00'
         12        SEND_VAL                                                 1
         13        DO_ICALL                                         $5      
         14        ASSIGN                                                   !0, $5
    4    15        INIT_FCALL                                               'unpack'
         16        SEND_VAL                                                 'h%2A'
         17        SEND_VAR                                                 !0
         18        DO_ICALL                                         $7      
         19        ASSIGN                                                   !1, $7
    5    20        INIT_FCALL                                               'hexdec'
         21        FETCH_DIM_R                                      ~9      !1, 1
         22        SEND_VAL                                                 ~9
         23        DO_ICALL                                         $10     
         24        ASSIGN                                                   !1, $10
    6    25        INIT_FCALL                                               'var_dump'
         26        SEND_VAR                                                 !0
         27        DO_ICALL                                                 
    7    28        INIT_FCALL                                               'var_dump'
         29        SEND_VAR                                                 !1
         30        DO_ICALL                                                 
    8    31        INIT_FCALL                                               'var_dump'
         32        SEND_VAL                                                 9223372036854775807
         33        DO_ICALL                                                 
         34      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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