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<?php var_dump($vals = explode(' ', null)); var_dump(($vals && strlen(current($vals)) > 0) ? $vals : array());
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 46) Position 1 = 10, Position 2 = 16
Branch analysis from position: 10
2 jumps found. (Code = 43) Position 1 = 17, Position 2 = 19
Branch analysis from position: 17
1 jumps found. (Code = 42) Position 1 = 20
Branch analysis from position: 20
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 19
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 16
filename:       /in/glHq1
function name:  (null)
number of ops:  23
compiled vars:  !0 = $vals
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'explode'
          2        SEND_VAL                                                 '+'
          3        SEND_VAL                                                 null
          4        DO_ICALL                                         $1      
          5        ASSIGN                                           ~2      !0, $1
          6        SEND_VAL                                                 ~2
          7        DO_ICALL                                                 
    4     8        INIT_FCALL                                               'var_dump'
          9      > JMPZ_EX                                          ~4      !0, ->16
         10    >   INIT_FCALL                                               'current'
         11        SEND_VAR                                                 !0
         12        DO_ICALL                                         $5      
         13        STRLEN                                           ~6      $5
         14        IS_SMALLER                                       ~7      0, ~6
         15        BOOL                                             ~4      ~7
         16    > > JMPZ                                                     ~4, ->19
         17    >   QM_ASSIGN                                        ~8      !0
         18      > JMP                                                      ->20
         19    >   QM_ASSIGN                                        ~8      <array>
         20    >   SEND_VAL                                                 ~8
         21        DO_ICALL                                                 
         22      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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