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<?php $x = [ '"\"', '001', 'nulll', '""' ]; foreach ($x as $y) { var_dump([json_decode($y), json_last_error()]); }
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/VvCAj
function name:  (null)
number of ops:  16
compiled vars:  !0 = $x, !1 = $y
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    7     1      > FE_RESET_R                                       $3      !0, ->14
          2    > > FE_FETCH_R                                               $3, !1, ->14
    8     3    >   INIT_FCALL                                               'var_dump'
          4        INIT_FCALL                                               'json_decode'
          5        SEND_VAR                                                 !1
          6        DO_ICALL                                         $4      
          7        INIT_ARRAY                                       ~5      $4
          8        INIT_FCALL                                               'json_last_error'
          9        DO_ICALL                                         $6      
         10        ADD_ARRAY_ELEMENT                                ~5      $6
         11        SEND_VAL                                                 ~5
         12        DO_ICALL                                                 
    7    13      > JMP                                                      ->2
         14    >   FE_FREE                                                  $3
    9    15      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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