3v4l.org

run code in 300+ PHP versions simultaneously
<?php for ($x=0,$a=null;$x<28;$x++) { $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_'; $a .= substr($chars,mt_rand(0,63),1); } echo $a;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 15
Branch analysis from position: 15
2 jumps found. (Code = 44) Position 1 = 17, Position 2 = 3
Branch analysis from position: 17
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 3
2 jumps found. (Code = 44) Position 1 = 17, Position 2 = 3
Branch analysis from position: 17
Branch analysis from position: 3
filename:       /in/4PXLh
function name:  (null)
number of ops:  19
compiled vars:  !0 = $x, !1 = $a, !2 = $chars
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 0
          1        ASSIGN                                                   !1, null
          2      > JMP                                                      ->15
    4     3    >   ASSIGN                                                   !2, 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_'
    5     4        INIT_FCALL                                               'substr'
          5        SEND_VAR                                                 !2
          6        INIT_FCALL                                               'mt_rand'
          7        SEND_VAL                                                 0
          8        SEND_VAL                                                 63
          9        DO_ICALL                                         $6      
         10        SEND_VAR                                                 $6
         11        SEND_VAL                                                 1
         12        DO_ICALL                                         $7      
         13        ASSIGN_OP                                     8          !1, $7
    3    14        PRE_INC                                                  !0
         15    >   IS_SMALLER                                               !0, 28
         16      > JMPNZ                                                    ~10, ->3
    7    17    >   ECHO                                                     !1
         18      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
141.44 ms | 1395 KiB | 17 Q