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run code in 150+ php & hhvm versions
Bugs & Features
<?php class A { private $value = 1; public $value2 = 1; private $properties; public function __construct() { } public function setProperties($properties) { $this->properties = $properties; } } $count = 10000; $a = new A(); $b = []; $m1 = memory_get_usage(); for ($i = 0; $i < $count; $i++) { new A(); //$a->setProperties(1); } $m2 = memory_get_usage(); var_dump(['memory' => $m2 - $m1, 'perItem' => ($m2 - $m1) / $count]);
Output for hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(2) { ["memory"]=> int(0) ["perItem"]=> int(0) }
Output for 5.4.0 - 5.6.28
array(2) { ["memory"]=> int(272) ["perItem"]=> float(0.0272) }
Output for 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/qONNZ on line 24
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/qONNZ on line 24
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/qONNZ on line 6
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/qONNZ on line 6
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/qONNZ on line 6
Process exited with code 255.