3v4l.org

run code in 500+ PHP versions simultaneously
<?php function cnt(){return '';} if (cnt() == 0) echo 1;
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 4, Position 2 = 5
Branch analysis from position: 4
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 5
filename:       /in/rmN8l
function name:  (null)
number of ops:  6
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    5     0  E >   INIT_FCALL                                                   'cnt'
          1        DO_FCALL                                          0  $0      
          2        IS_EQUAL                                                     $0, 0
          3      > JMPZ                                                         ~1, ->5
          4    >   ECHO                                                         1
    6     5    > > RETURN                                                       1

Function cnt:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/rmN8l
function name:  cnt
number of ops:  2
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E > > RETURN                                                       ''
          1*     > RETURN                                                       null

End of function cnt

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
163.62 ms | 1983 KiB | 14 Q