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<?php var_dump(PCRE_VERSION); //$b = preg_replace('/b.*b/', '', 'baab' . str_repeat('a', 100024)); $b = preg_match('/(.)*/', str_repeat('x', 6000)); var_dump(PCRE_VERSION, ini_get('pcre.backtrack_limit'),ini_get('pcre.recursion_limit'), strlen($b));
Finding entry points
Branch analysis from position: 0
Jump found. Position 1 = -2
filename:       /in/U4Ic5
function name:  (null)
number of ops:  26
compiled vars:  !0 = $b
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   2     0  E >   INIT_FCALL                                               'var_dump'
         1        SEND_VAL                                                 '8.37+2015-04-28'
         2        DO_ICALL                                                 
   4     3        INIT_FCALL                                               'preg_match'
         4        SEND_VAL                                                 '%2F%28.%29%2A%2F'
         5        INIT_FCALL                                               'str_repeat'
         6        SEND_VAL                                                 'x'
         7        SEND_VAL                                                 6000
         8        DO_ICALL                                         $2      
         9        SEND_VAR                                                 $2
        10        DO_ICALL                                         $3      
        11        ASSIGN                                                   !0, $3
   5    12        INIT_FCALL                                               'var_dump'
        13        SEND_VAL                                                 '8.37+2015-04-28'
        14        INIT_FCALL                                               'ini_get'
        15        SEND_VAL                                                 'pcre.backtrack_limit'
        16        DO_ICALL                                         $5      
        17        SEND_VAR                                                 $5
        18        INIT_FCALL                                               'ini_get'
        19        SEND_VAL                                                 'pcre.recursion_limit'
        20        DO_ICALL                                         $6      
        21        SEND_VAR                                                 $6
        22        STRLEN                                           ~7      !0
        23        SEND_VAL                                                 ~7
        24        DO_ICALL                                                 
        25      > RETURN                                                   1

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