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<?php $array = array("person1" => array(0 => array('k1'=>'v1', 'k2'=>'v2'), 1 => array('k1'=>'v1', 'k2'=>'v2')), "person2" => array(0 => array('k1'=>'v1', 'k2'=>'v2'), 1 => array('k1'=>'v1', 'k2'=>'v2'))); reset($array); $first_key = key($array); echo $first_key;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/16uQ3
function name:  (null)
number of ops:  10
compiled vars:  !0 = $array, !1 = $first_key
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1        INIT_FCALL                                               'reset'
          2        SEND_REF                                                 !0
          3        DO_ICALL                                                 
    4     4        INIT_FCALL                                               'key'
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                         $4      
          7        ASSIGN                                                   !1, $4
    5     8        ECHO                                                     !1
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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