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<?php $strings = [ 'if (blah === blah) do something', 'if (foo === foo) do something', 'if (bah === bah) { do something }', 'if (bar === bar) {do something}' ]; foreach ($strings as $string) { var_export(preg_match('~if\s*\(.*?\)\s*(\{)?~', $string, $m) ? $m : ''); echo "\nHas curly brace: " , isset($m[1]) ? 'Yes' : 'No'; echo "\n---\n"; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 2, Position 2 = 24
Branch analysis from position: 2
2 jumps found. (Code = 78) Position 1 = 3, Position 2 = 24
Branch analysis from position: 3
2 jumps found. (Code = 43) Position 1 = 10, Position 2 = 12
Branch analysis from position: 10
1 jumps found. (Code = 42) Position 1 = 13
Branch analysis from position: 13
2 jumps found. (Code = 43) Position 1 = 18, Position 2 = 20
Branch analysis from position: 18
1 jumps found. (Code = 42) Position 1 = 21
Branch analysis from position: 21
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 20
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 12
2 jumps found. (Code = 43) Position 1 = 18, Position 2 = 20
Branch analysis from position: 18
Branch analysis from position: 20
Branch analysis from position: 24
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 24
filename:       /in/Ac76h
function name:  (null)
number of ops:  26
compiled vars:  !0 = $strings, !1 = $string, !2 = $m
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
   12     1      > FE_RESET_R                                       $4      !0, ->24
          2    > > FE_FETCH_R                                               $4, !1, ->24
   13     3    >   INIT_FCALL                                               'var_export'
          4        INIT_FCALL                                               'preg_match'
          5        SEND_VAL                                                 '%7Eif%5Cs%2A%5C%28.%2A%3F%5C%29%5Cs%2A%28%5C%7B%29%3F%7E'
          6        SEND_VAR                                                 !1
          7        SEND_REF                                                 !2
          8        DO_ICALL                                         $5      
          9      > JMPZ                                                     $5, ->12
         10    >   QM_ASSIGN                                        ~6      !2
         11      > JMP                                                      ->13
         12    >   QM_ASSIGN                                        ~6      ''
         13    >   SEND_VAL                                                 ~6
         14        DO_ICALL                                                 
   14    15        ECHO                                                     '%0AHas+curly+brace%3A+'
         16        ISSET_ISEMPTY_DIM_OBJ                         0          !2, 1
         17      > JMPZ                                                     ~8, ->20
         18    >   QM_ASSIGN                                        ~9      'Yes'
         19      > JMP                                                      ->21
         20    >   QM_ASSIGN                                        ~9      'No'
         21    >   ECHO                                                     ~9
   15    22        ECHO                                                     '%0A---%0A'
   12    23      > JMP                                                      ->2
         24    >   FE_FREE                                                  $4
   16    25      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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