3v4l.org

run code in 500+ PHP versions simultaneously
<?php $a = ""; $a[] = "y"; var_dump($a); $b = "x"; $b[] = "y"; var_dump($b);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/vg7Oe
function name:  (null)
number of ops:  13
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                       !0, ''
          1        ASSIGN_DIM                                                   !0
          2        OP_DATA                                                      'y'
          3        INIT_FCALL                                                   'var_dump'
          4        SEND_VAR                                                     !0
          5        DO_ICALL                                                     
    3     6        ASSIGN                                                       !1, 'x'
          7        ASSIGN_DIM                                                   !1
          8        OP_DATA                                                      'y'
          9        INIT_FCALL                                                   'var_dump'
         10        SEND_VAR                                                     !1
         11        DO_ICALL                                                     
         12      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
157.18 ms | 2911 KiB | 14 Q