3v4l.org

run code in 300+ PHP versions simultaneously
<?php $handle = fopen ('php://temp', 'r'); fclose($handle); var_dump(fwrite($handle, 'test'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/gDEoD
function name:  (null)
number of ops:  16
compiled vars:  !0 = $handle
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'fopen'
          1        SEND_VAL                                                 'php%3A%2F%2Ftemp'
          2        SEND_VAL                                                 'r'
          3        DO_ICALL                                         $1      
          4        ASSIGN                                                   !0, $1
    4     5        INIT_FCALL                                               'fclose'
          6        SEND_VAR                                                 !0
          7        DO_ICALL                                                 
    5     8        INIT_FCALL                                               'var_dump'
          9        INIT_FCALL                                               'fwrite'
         10        SEND_VAR                                                 !0
         11        SEND_VAL                                                 'test'
         12        DO_ICALL                                         $4      
         13        SEND_VAR                                                 $4
         14        DO_ICALL                                                 
         15      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
146.62 ms | 1394 KiB | 21 Q