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<?php $_POST['foo'] = ''; $_POST['bar'] = ''; $_POST['baz'] = ''; // fields $fields = [['Label_Field' => 'foo']]; // just labels $labels = array_column($fields, 'Label_Field'); // filter $_POST by keys which are in $labels $data = array_filter($_POST, fn($k) => in_array($k, $labels), ARRAY_FILTER_USE_KEY); print_r($data);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/vna02
function name:  (null)
number of ops:  28
compiled vars:  !0 = $fields, !1 = $labels, !2 = $data
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   FETCH_W                          global              $3      '_POST'
          1        ASSIGN_DIM                                                   $3, 'foo'
          2        OP_DATA                                                      ''
    4     3        FETCH_W                          global              $5      '_POST'
          4        ASSIGN_DIM                                                   $5, 'bar'
          5        OP_DATA                                                      ''
    5     6        FETCH_W                          global              $7      '_POST'
          7        ASSIGN_DIM                                                   $7, 'baz'
          8        OP_DATA                                                      ''
    8     9        ASSIGN                                                       !0, <array>
   11    10        INIT_FCALL                                                   'array_column'
         11        SEND_VAR                                                     !0
         12        SEND_VAL                                                     'Label_Field'
         13        DO_ICALL                                             $10     
         14        ASSIGN                                                       !1, $10
   14    15        INIT_FCALL                                                   'array_filter'
         16        FETCH_R                          global              ~12     '_POST'
         17        SEND_VAL                                                     ~12
         18        DECLARE_LAMBDA_FUNCTION                              ~13     [0]
         19        BIND_LEXICAL                                                 ~13, !1
         20        SEND_VAL                                                     ~13
         21        SEND_VAL                                                     2
         22        DO_ICALL                                             $14     
         23        ASSIGN                                                       !2, $14
   16    24        INIT_FCALL                                                   'print_r'
         25        SEND_VAR                                                     !2
         26        DO_ICALL                                                     
         27      > RETURN                                                       1


Dynamic Functions:
Dynamic Function 0
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/vna02
function name:  {closure:/in/vna02:14}
number of ops:  5
compiled vars:  !0 = $k, !1 = $labels
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   14     0  E >   RECV                                                 !0      
          1        BIND_STATIC                                                  !1
          2        FRAMELESS_ICALL_2                in_array            ~2      !0, !1
          3      > RETURN                                                       ~2
          4*     > RETURN                                                       null

End of Dynamic Function 0

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