3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = 'a:3:{i:0;O:9:"exception":1:{s:16:"'."\0".'Exception'."\0".'trace";s:4:"test";}i:1;r:3;i:2;r:4;}'; $x = unserialize($x); for ($i = 0; $i < 5; $i++) { $v[$i] = 'hi'.$i; } var_dump($x[1]);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: Cannot assign string to property Exception::$trace of type array in /in/hlZVM:4 Stack trace: #0 /in/hlZVM(4): unserialize('a:3:{i:0;O:9:"e...') #1 {main} thrown in /in/hlZVM on line 4
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Notice: unserialize(): Error at offset 72 of 81 bytes in /in/hlZVM on line 4 Notice: Trying to access array offset on value of type bool in /in/hlZVM on line 10 NULL
Output for 7.3.32 - 7.3.33
NULL
Output for 7.3.0 - 7.3.31
Notice: unserialize(): Error at offset 72 of 81 bytes in /in/hlZVM on line 4 NULL
Output for 5.4.20 - 5.4.45, 5.5.4 - 5.5.38, 5.6.0 - 5.6.38, 7.0.15 - 7.0.33, 7.1.1 - 7.1.33, 7.2.0 - 7.2.33
string(4) "test"
Output for 5.4.0 - 5.4.19, 5.5.0 - 5.5.3, 7.0.3 - 7.0.14, 7.1.0
Notice: unserialize(): Error at offset 80 of 81 bytes in /in/hlZVM on line 4 NULL
Output for 7.0.0 - 7.0.2
Notice: Undefined offset: 1 in /in/hlZVM on line 10 NULL

preferences:
275.45 ms | 401 KiB | 368 Q