3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = (array) json_decode('{"a":"1","2":"1","3":"1","4":"1","12":"1"}'); #var_dump($array); #var_dump(array_key_exists('a', $array)); #var_dump(array_key_exists(12, $array)); #var_dump($array[12]); #var_dump($array['12']); #var_dump($array[12]); #$var = (array)json_decode('{"a":"1","2":"1","3":"1","4":"1","12":"1"}'); #var_dump($var['2']); #var_export($var); $var = array('a'=>1, '2'=>2); var_export($var);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/3YpPg
function name:  (null)
number of ops:  10
compiled vars:  !0 = $array, !1 = $var
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'json_decode'
          1        SEND_VAL                                                 '%7B%22a%22%3A%221%22%2C%222%22%3A%221%22%2C%223%22%3A%221%22%2C%224%22%3A%221%22%2C%2212%22%3A%221%22%7D'
          2        DO_ICALL                                         $2      
          3        CAST                                          7  ~3      $2
          4        ASSIGN                                                   !0, ~3
   12     5        ASSIGN                                                   !1, <array>
   14     6        INIT_FCALL                                               'var_export'
          7        SEND_VAR                                                 !1
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0

preferences:
252.42 ms | 1394 KiB | 18 Q