3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var1 = -128; $var2 = (string)$var1; echo ((ctype_print($var2)) ? 'true' : 'false');
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 7, Position 2 = 9
Branch analysis from position: 7
1 jumps found. (Code = 42) Position 1 = 10
Branch analysis from position: 10
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 9
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/mocd8
function name:  (null)
number of ops:  12
compiled vars:  !0 = $var1, !1 = $var2
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, -128
    4     1        CAST                                          6  ~3      !0
          2        ASSIGN                                                   !1, ~3
    5     3        INIT_FCALL                                               'ctype_print'
          4        SEND_VAR                                                 !1
          5        DO_ICALL                                         $5      
          6      > JMPZ                                                     $5, ->9
          7    >   QM_ASSIGN                                        ~6      'true'
          8      > JMP                                                      ->10
          9    >   QM_ASSIGN                                        ~6      'false'
         10    >   ECHO                                                     ~6
         11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
161.72 ms | 1394 KiB | 15 Q