3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { } $foo = new Foo(); $foo->foo = 'foo'; var_dump(memory_get_usage(true));
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.25, 7.3.0 - 7.3.12, 7.4.0
int(2097152)
Output for 5.2.1 - 5.2.17, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
int(262144)
Output for 5.3.0 - 5.3.29
int(786432)
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0
Fatal error: Call to undefined function memory_get_usage() in /in/pgZ2I on line 10
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: memory_get_usage() in /in/pgZ2I on line 10
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: memory_get_usage() in /in/pgZ2I on line 10
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: memory_get_usage() in /in/pgZ2I on line 10

preferences:
149.14 ms | 401 KiB | 247 Q