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<?php function isCorrect($string) { if (strlen($string) % 2) { for( $i = 0; $i < strlen($string); $i++) { $string; } } return false; } $string = '({{}})'; var_dump(isCorrect($string)); //assert(isCorrect('') === true); //assert(isCorrect('()') === true); //assert(isCorrect('{()}') === true); //assert(isCorrect('{()}{}') === true); //assert(isCorrect('(())') === true); //assert(isCorrect('{({({({()})})})}') === true); //assert(isCorrect('{(})') === false);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/1kaMo
function name:  (null)
number of ops:  8
compiled vars:  !0 = $string
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   10     0  E >   ASSIGN                                                   !0, '%28%7B%7B%7D%7D%29'
   11     1        INIT_FCALL                                               'var_dump'
          2        INIT_FCALL                                               'iscorrect'
          3        SEND_VAR                                                 !0
          4        DO_FCALL                                      0  $2      
          5        SEND_VAR                                                 $2
          6        DO_ICALL                                                 
   18     7      > RETURN                                                   1

Function iscorrect:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 4, Position 2 = 10
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 7
Branch analysis from position: 7
2 jumps found. (Code = 44) Position 1 = 10, Position 2 = 6
Branch analysis from position: 10
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 6
2 jumps found. (Code = 44) Position 1 = 10, Position 2 = 6
Branch analysis from position: 10
Branch analysis from position: 6
Branch analysis from position: 10
filename:       /in/1kaMo
function name:  isCorrect
number of ops:  12
compiled vars:  !0 = $string, !1 = $i
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   RECV                                             !0      
    3     1        STRLEN                                           ~2      !0
          2        MOD                                              ~3      ~2, 2
          3      > JMPZ                                                     ~3, ->10
    4     4    >   ASSIGN                                                   !1, 0
          5      > JMP                                                      ->7
          6    >   PRE_INC                                                  !1
          7    >   STRLEN                                           ~6      !0
          8        IS_SMALLER                                               !1, ~6
          9      > JMPNZ                                                    ~7, ->6
    8    10    > > RETURN                                                   <false>
    9    11*     > RETURN                                                   null

End of function iscorrect

Generated using Vulcan Logic Dumper, using php 8.0.0


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