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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 = array(); $last = 0; for ($i = 0; $i < 5000; $i++) { $foo->bar(); gc_collect_cycles(); $peak = round(memory_get_peak_usage(true) / 1024 / 1024, 2); if ($peak != $last) { $history[] = $peak; $last = $peak; } } var_dump($history);
based on o01Us
Output for 7.0.0 - 7.1.0
array(1) { [0]=> float(2) }
Output for hhvm-3.12.0
array(20) { [0]=> float(0.3) [1]=> float(0.31) [2]=> float(0.32) [3]=> float(0.33) [4]=> float(0.34) [5]=> float(0.35) [6]=> float(0.36) [7]=> float(0.37) [8]=> float(0.38) [9]=> float(0.39) [10]=> float(0.4) [11]=> float(0.41) [12]=> float(0.42) [13]=> float(0.43) [14]=> float(0.44) [15]=> float(0.45) [16]=> float(0.46) [17]=> float(0.47) [18]=> float(0.48) [19]=> float(0.49) }
Output for hhvm-3.10.0
array(20) { [0]=> float(0.29) [1]=> float(0.3) [2]=> float(0.31) [3]=> float(0.32) [4]=> float(0.33) [5]=> float(0.34) [6]=> float(0.35) [7]=> float(0.36) [8]=> float(0.37) [9]=> float(0.38) [10]=> float(0.39) [11]=> float(0.4) [12]=> float(0.41) [13]=> float(0.42) [14]=> float(0.43) [15]=> float(0.44) [16]=> float(0.45) [17]=> float(0.46) [18]=> float(0.47) [19]=> float(0.48) }
Output for 5.4.0 - 5.6.28
array(6) { [0]=> float(0.25) [1]=> float(0.5) [2]=> float(0.75) [3]=> float(1.25) [4]=> float(1.5) [5]=> float(1.75) }
Output for 5.3.0 - 5.3.29
array(10) { [0]=> float(0.75) [1]=> float(1) [2]=> float(1.25) [3]=> float(1.5) [4]=> float(2) [5]=> float(2.25) [6]=> float(2.5) [7]=> float(2.75) [8]=> float(3) [9]=> float(3.25) }
Output for 5.0.0 - 5.2.17
Fatal error: Call to undefined function gc_collect_cycles() in /in/AHtfB on line 16
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/AHtfB 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/AHtfB 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/AHtfB on line 4
Process exited with code 255.