3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ''; $b = 'string'; strlen($a); strlen($b); '' !== $a; '' !== $b;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/7bavA
function name:  (null)
number of ops:  11
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, ''
    4     1        ASSIGN                                                   !1, 'string'
    6     2        STRLEN                                           ~4      !0
          3        FREE                                                     ~4
    7     4        STRLEN                                           ~5      !1
          5        FREE                                                     ~5
    9     6        IS_NOT_IDENTICAL                                 ~6      !0, ''
          7        FREE                                                     ~6
   10     8        IS_NOT_IDENTICAL                                 ~7      !1, ''
          9        FREE                                                     ~7
         10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
166.28 ms | 1392 KiB | 13 Q