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<?php $strings = ['', 'asdasda', '1sdkjfhs', '123asdj', '1-1kjahsd']; foreach($strings as $string) { var_dump($string == 0, $string === 0, (int)$string, $string); echo PHP_EOL; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 2, Position 2 = 14
Branch analysis from position: 2
2 jumps found. (Code = 78) Position 1 = 3, Position 2 = 14
Branch analysis from position: 3
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 14
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 14
filename:       /in/QHjiA
function name:  (null)
number of ops:  16
compiled vars:  !0 = $strings, !1 = $string
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    5     1      > FE_RESET_R                                       $3      !0, ->14
          2    > > FE_FETCH_R                                               $3, !1, ->14
    6     3    >   INIT_FCALL                                               'var_dump'
          4        IS_EQUAL                                         ~4      !1, 0
          5        SEND_VAL                                                 ~4
          6        IS_IDENTICAL                                     ~5      !1, 0
          7        SEND_VAL                                                 ~5
          8        CAST                                          4  ~6      !1
          9        SEND_VAL                                                 ~6
         10        SEND_VAR                                                 !1
         11        DO_ICALL                                                 
    7    12        ECHO                                                     '%0A'
    5    13      > JMP                                                      ->2
         14    >   FE_FREE                                                  $3
    8    15      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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