3v4l.org

run code in 500+ PHP versions simultaneously
<?php $a = "ab"; $b = "cd"; $c = $a . $b; strlen($c); str_pad($c, 2);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/9QJQ7
function name:  (null)
number of ops:  11
compiled vars:  !0 = $a, !1 = $b, !2 = $c
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, 'ab'
    4     1        ASSIGN                                                       !1, 'cd'
    6     2        CONCAT                                               ~5      !0, !1
          3        ASSIGN                                                       !2, ~5
    8     4        STRLEN                                               ~7      !2
          5        FREE                                                         ~7
    9     6        INIT_FCALL                                                   'str_pad'
          7        SEND_VAR                                                     !2
          8        SEND_VAL                                                     2
          9        DO_ICALL                                                     
         10      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
199.89 ms | 2214 KiB | 13 Q