3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var['foo'] = array(array('fooooo', 'bar')); $a = reset(array_slice($var['foo'], 0, 1)); var_dump($a); $var['foo'][0][0] = 'bar'; var_dump($a);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/0eYYV
function name:  (null)
number of ops:  23
compiled vars:  !0 = $var, !1 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN_DIM                                               !0, 'foo'
          1        OP_DATA                                                  <array>
    4     2        INIT_FCALL                                               'reset'
          3        INIT_FCALL                                               'array_slice'
          4        FETCH_DIM_R                                      ~3      !0, 'foo'
          5        SEND_VAL                                                 ~3
          6        SEND_VAL                                                 0
          7        SEND_VAL                                                 1
          8        DO_ICALL                                         $4      
          9        SEND_VAR_NO_REF                               0          $4
         10        DO_ICALL                                         $5      
         11        ASSIGN                                                   !1, $5
    6    12        INIT_FCALL                                               'var_dump'
         13        SEND_VAR                                                 !1
         14        DO_ICALL                                                 
    8    15        FETCH_DIM_W                                      $8      !0, 'foo'
         16        FETCH_DIM_W                                      $9      $8, 0
         17        ASSIGN_DIM                                               $9, 0
         18        OP_DATA                                                  'bar'
   10    19        INIT_FCALL                                               'var_dump'
         20        SEND_VAR                                                 !1
         21        DO_ICALL                                                 
         22      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
164.12 ms | 940 KiB | 20 Q