3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class Foo { private $orig; public function bar() { $this->orig = clone $this; } } $foo = new Foo; for ($i = 0; $i < 20; $i++) { $foo->bar(); echo (memory_get_peak_usage(true) / 1024 / 1024) . "\n"; }
based on H9M1Z
Output for 7.0.0 - 7.2.0
2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Output for 5.2.1 - 5.2.17, 5.4.0 - 5.6.28
0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25
Output for 5.3.0 - 5.3.29
0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75
Output for 5.0.0 - 5.2.0
Fatal error: Call to undefined function memory_get_peak_usage() in /in/7PRN5 on line 14
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/7PRN5 on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/7PRN5 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/7PRN5 on line 4
Process exited with code 255.