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<?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(); $peak = round(memory_get_peak_usage(true) / 1024 / 1024, 2); if ($peak != $last) { $history[] = $peak; $last = $peak; } } var_dump($history);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(1) { [0]=> float(2) }
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 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 5.2.1 - 5.2.17
array(8) { [0]=> float(0.25) [1]=> float(0.5) [2]=> float(0.75) [3]=> float(1) [4]=> float(1.25) [5]=> float(1.5) [6]=> float(1.75) [7]=> float(2.25) }
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_peak_usage() in /in/o01Us 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/o01Us 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
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/o01Us 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/o01Us on line 4
Process exited with code 255.
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