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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                                  '%00%7Bclosure%7D%2Fin%2Fqfar9%3A10%240'
          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

Function %00%7Bclosure%7D%2Fin%2Fqfar9%3A10%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/qfar9
function name:  {closure}
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 function %00%7Bclosure%7D%2Fin%2Fqfar9%3A10%240

Generated using Vulcan Logic Dumper, using php 8.0.0


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