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<?php $string = 'abcdeafghi'; var_dump(strpos($string, 'a', 3) !== false); var_dump(str_contains($string, 'a')); // not from offset 1 var_dump(str_contains(substr($string, 3), 'a'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/7S41p
function name:  (null)
number of ops:  17
compiled vars:  !0 = $string
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, 'abcdeafghi'
    5     1        INIT_FCALL                                                   'var_dump'
          2        FRAMELESS_ICALL_3                strpos              ~2      !0, 'a'
          3        OP_DATA                                                      3
          4        TYPE_CHECK                                      1018  ~3      ~2
          5        SEND_VAL                                                     ~3
          6        DO_ICALL                                                     
    6     7        INIT_FCALL                                                   'var_dump'
          8        FRAMELESS_ICALL_2                str_contains        ~5      !0, 'a'
          9        SEND_VAL                                                     ~5
         10        DO_ICALL                                                     
    7    11        INIT_FCALL                                                   'var_dump'
         12        FRAMELESS_ICALL_2                substr              ~7      !0, 3
         13        FRAMELESS_ICALL_2                str_contains        ~8      ~7, 'a'
         14        SEND_VAL                                                     ~8
         15        DO_ICALL                                                     
         16      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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