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<?php $url = 'aaaaa?bbbbb'; $questionmarkPosition = strpos($url, '?'); var_dump(substr($url, 0, $questionmarkPosition));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/6VH25
function name:  (null)
number of ops:  15
compiled vars:  !0 = $url, !1 = $questionmarkPosition
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'aaaaa%3Fbbbbb'
    3     1        INIT_FCALL                                               'strpos'
          2        SEND_VAR                                                 !0
          3        SEND_VAL                                                 '%3F'
          4        DO_ICALL                                         $3      
          5        ASSIGN                                                   !1, $3
    5     6        INIT_FCALL                                               'var_dump'
          7        INIT_FCALL                                               'substr'
          8        SEND_VAR                                                 !0
          9        SEND_VAL                                                 0
         10        SEND_VAR                                                 !1
         11        DO_ICALL                                         $5      
         12        SEND_VAR                                                 $5
         13        DO_ICALL                                                 
         14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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