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<?php $array = Array ( 0 => Array ( 'id' => 1, 'column2' => 'value2', 'column3' => 'value3', 'column4' => 'value4', 'column5' => 'value5' ), 1 => Array ( 'id' => 1, 'column2' => 'value2', 'column3' => 'value3', 'column4' => 'value4', 'column5' => 'value5' ), 2 => Array ( 'id' => 2, 'column2' => 'value2', 'column3' => 'value3', 'column4' => 'value4', 'column5' => 'value5' ), ); $keys = array_keys(array_column($array, 'column2'), 2); //$new_array = array_map(function($k) use ($array){return $array[$k];}, $keys); print_r($keys);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/5uUFf
function name:  (null)
number of ops:  14
compiled vars:  !0 = $array, !1 = $keys
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   10     1        INIT_FCALL                                               'array_keys'
          2        INIT_FCALL                                               'array_column'
          3        SEND_VAR                                                 !0
          4        SEND_VAL                                                 'column2'
          5        DO_ICALL                                         $3      
          6        SEND_VAR                                                 $3
          7        SEND_VAL                                                 2
          8        DO_ICALL                                         $4      
          9        ASSIGN                                                   !1, $4
   12    10        INIT_FCALL                                               'print_r'
         11        SEND_VAR                                                 !1
         12        DO_ICALL                                                 
         13      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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