3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class Foo { private $orig; public function bar() { $this->orig = clone $this; } } $foo = new Foo; $history = []; $last = 0; for ($i = 0; $i < 500; $i++) { $foo->bar(); $peak = round(memory_get_peak_usage(true) / 1024 / 1024, 2); if ($peak != $last) { $history[] = $peak; $last = $peak; } } var_dump($history);
based on 7PRN5
Output for 7.0.0 - 7.1.0
array(1) { [0]=> float(2) }
Output for hhvm-3.10.0 - 3.12.0
array(3) { [0]=> float(0.29) [1]=> float(0.3) [2]=> float(0.31) }
Output for 5.4.0 - 5.6.28
array(2) { [0]=> float(0.25) [1]=> float(0.5) }
Output for 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/0BJ1n on line 12
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/0BJ1n on line 12
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/0BJ1n 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/0BJ1n 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/0BJ1n on line 4
Process exited with code 255.