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<?php $arr = array( 'key' => 'foo', 'key2' => 'bar', 0 => 'num_foo', 1 => 'num_bar' ); $new_array = array_filter ($arr, function($key) { return is_int($key); }, ARRAY_FILTER_USE_KEY); var_dump($new_array);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/qfar9
function name:  (null)
number of ops:  12
compiled vars:  !0 = $arr, !1 = $new_array
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, <array>
   10     1        INIT_FCALL                                                   'array_filter'
          2        SEND_VAR                                                     !0
          3        DECLARE_LAMBDA_FUNCTION                              ~3      [0]
          4        SEND_VAL                                                     ~3
          5        SEND_VAL                                                     2
          6        DO_ICALL                                             $4      
          7        ASSIGN                                                       !1, $4
   12     8        INIT_FCALL                                                   'var_dump'
          9        SEND_VAR                                                     !1
         10        DO_ICALL                                                     
         11      > 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/qfar9
function name:  {closure:/in/qfar9:10}
number of ops:  4
compiled vars:  !0 = $key
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   10     0  E >   RECV                                                 !0      
          1        TYPE_CHECK                                       16  ~1      !0
          2      > RETURN                                                       ~1
          3*     > RETURN                                                       null

End of Dynamic Function 0

Generated using Vulcan Logic Dumper, using php 8.5.0


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