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<?php $arr =Array ( "0" => Array ( "fName" => "Alice", "lName" => "Gibson" ), "1" => Array ( "fName" => "Jack", "lName" => "Smith" ), "2" => Array ( "fName" => "Bruce", "lName" => "Lee" ) ); $fname = array_column($arr, "fName"); Var_dump($fname);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/OIGNM
function name:  (null)
number of ops:  10
compiled vars:  !0 = $arr, !1 = $fname
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   26     1        INIT_FCALL                                               'array_column'
          2        SEND_VAR                                                 !0
          3        SEND_VAL                                                 'fName'
          4        DO_ICALL                                         $3      
          5        ASSIGN                                                   !1, $3
   28     6        INIT_FCALL                                               'var_dump'
          7        SEND_VAR                                                 !1
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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