3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test($a) { fwrite($a, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'); fseek($a, 0); fwrite($a, '1234567890'); fseek($a, 0); var_dump(fread($a, 1024)); fclose($a); } $a = fopen('php://temp', 'a+'); test($a); echo '-------------------' . PHP_EOL; $a = fopen(tempnam(sys_get_temp_dir(), "hello"), 'a+'); test($a);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/6KlYg
function name:  (null)
number of ops:  24
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   11     0  E >   INIT_FCALL                                               'fopen'
          1        SEND_VAL                                                 'php%3A%2F%2Ftemp'
          2        SEND_VAL                                                 'a%2B'
          3        DO_ICALL                                         $1      
          4        ASSIGN                                                   !0, $1
   12     5        INIT_FCALL                                               'test'
          6        SEND_VAR                                                 !0
          7        DO_FCALL                                      0          
   14     8        ECHO                                                     '-------------------%0A'
   16     9        INIT_FCALL                                               'fopen'
         10        INIT_FCALL                                               'tempnam'
         11        INIT_FCALL                                               'sys_get_temp_dir'
         12        DO_ICALL                                         $4      
         13        SEND_VAR                                                 $4
         14        SEND_VAL                                                 'hello'
         15        DO_ICALL                                         $5      
         16        SEND_VAR                                                 $5
         17        SEND_VAL                                                 'a%2B'
         18        DO_ICALL                                         $6      
         19        ASSIGN                                                   !0, $6
   17    20        INIT_FCALL                                               'test'
         21        SEND_VAR                                                 !0
         22        DO_FCALL                                      0          
         23      > RETURN                                                   1

Function test:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/6KlYg
function name:  test
number of ops:  28
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   RECV                                             !0      
    3     1        INIT_FCALL                                               'fwrite'
          2        SEND_VAR                                                 !0
          3        SEND_VAL                                                 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
          4        DO_ICALL                                                 
    4     5        INIT_FCALL                                               'fseek'
          6        SEND_VAR                                                 !0
          7        SEND_VAL                                                 0
          8        DO_ICALL                                                 
    5     9        INIT_FCALL                                               'fwrite'
         10        SEND_VAR                                                 !0
         11        SEND_VAL                                                 '1234567890'
         12        DO_ICALL                                                 
    6    13        INIT_FCALL                                               'fseek'
         14        SEND_VAR                                                 !0
         15        SEND_VAL                                                 0
         16        DO_ICALL                                                 
    7    17        INIT_FCALL                                               'var_dump'
         18        INIT_FCALL                                               'fread'
         19        SEND_VAR                                                 !0
         20        SEND_VAL                                                 1024
         21        DO_ICALL                                         $5      
         22        SEND_VAR                                                 $5
         23        DO_ICALL                                                 
    8    24        INIT_FCALL                                               'fclose'
         25        SEND_VAR                                                 !0
         26        DO_ICALL                                                 
    9    27      > RETURN                                                   null

End of function test

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
178.09 ms | 1403 KiB | 31 Q