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<?php var_dump(preg_grep('/.*/u', ['foo', 'bar'])); echo preg_last_error_msg(), "\n\n"; var_dump(preg_grep('/.*/u', ['foo', hex2bin('ff'), 'bar'])); echo preg_last_error_msg(), "\n\n";
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/o7uDf
function name:  (null)
number of ops:  29
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'preg_grep'
          2        SEND_VAL                                                 '%2F.%2A%2Fu'
          3        SEND_VAL                                                 <array>
          4        DO_ICALL                                         $0      
          5        SEND_VAR                                                 $0
          6        DO_ICALL                                                 
    4     7        INIT_FCALL                                               'preg_last_error_msg'
          8        DO_ICALL                                         $2      
          9        ECHO                                                     $2
         10        ECHO                                                     '%0A%0A'
    6    11        INIT_FCALL                                               'var_dump'
         12        INIT_FCALL                                               'preg_grep'
         13        SEND_VAL                                                 '%2F.%2A%2Fu'
         14        INIT_ARRAY                                       ~3      'foo'
         15        INIT_FCALL                                               'hex2bin'
         16        SEND_VAL                                                 'ff'
         17        DO_ICALL                                         $4      
         18        ADD_ARRAY_ELEMENT                                ~3      $4
         19        ADD_ARRAY_ELEMENT                                ~3      'bar'
         20        SEND_VAL                                                 ~3
         21        DO_ICALL                                         $5      
         22        SEND_VAR                                                 $5
         23        DO_ICALL                                                 
    7    24        INIT_FCALL                                               'preg_last_error_msg'
         25        DO_ICALL                                         $7      
         26        ECHO                                                     $7
         27        ECHO                                                     '%0A%0A'
         28      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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