3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { private $orig; public function cat() { $this->orig = clone $this; } } $foo = new Foo(); for ($i = 0; $i <= 10; $i++) { $foo->cat(); echo (memory_get_peak_usage(true) / 1024 / 1024) . "\n"; }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.32
Parse error: syntax error, unexpected '{' in /in/H9M1Z on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '{' in /in/H9M1Z on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/H9M1Z on line 4
Process exited with code 255.
preferences:
228.63 ms | 1395 KiB | 123 Q