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<?php var_dump(preg_match('~office\.react\.com~', 'office.react.com')); var_dump(preg_match('~office\.react\.com~A', 'office.react.com.random.org')); var_dump(preg_match('~office\.react\.com~A', 'www.office.react.com.random.org'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/qkETq
function name:  (null)
number of ops:  22
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%7Eoffice%5C.react%5C.com%7E'
          3        SEND_VAL                                                 'office.react.com'
          4        DO_ICALL                                         $0      
          5        SEND_VAR                                                 $0
          6        DO_ICALL                                                 
    4     7        INIT_FCALL                                               'var_dump'
          8        INIT_FCALL                                               'preg_match'
          9        SEND_VAL                                                 '%7Eoffice%5C.react%5C.com%7EA'
         10        SEND_VAL                                                 'office.react.com.random.org'
         11        DO_ICALL                                         $2      
         12        SEND_VAR                                                 $2
         13        DO_ICALL                                                 
    5    14        INIT_FCALL                                               'var_dump'
         15        INIT_FCALL                                               'preg_match'
         16        SEND_VAL                                                 '%7Eoffice%5C.react%5C.com%7EA'
         17        SEND_VAL                                                 'www.office.react.com.random.org'
         18        DO_ICALL                                         $4      
         19        SEND_VAR                                                 $4
         20        DO_ICALL                                                 
         21      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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