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run code in 150+ php & hhvm versions
Bugs & Features
<?php class A { private $bObj; public function __construct() { $this->bObj = new B($this); } } class B { private $owner; public function __construct($owner) { $this->owner = $owner; } } var_dump(memory_get_usage()); $aObj = new A(); var_dump(memory_get_usage()); unset($aObj); gc_collect_cycles(); var_dump(memory_get_usage()); // memory uncleared!!!
Output for 7.1.0
int(349208) int(349352) int(349240)
Output for 7.0.0 - 7.0.14
int(349216) int(349360) int(349248)
Output for hhvm-3.10.0 - 3.12.0
int(2097152) int(2097152) int(2097152)
Output for 5.6.0 - 5.6.28
int(222632) int(223096) int(222752)
Output for 5.5.0 - 5.5.38
int(222616) int(223064) int(222720)
Output for 5.4.0 - 5.4.45
int(223120) int(223568) int(223224)
Output for 5.3.11 - 5.3.29
int(626648) int(627480) int(626680)
Output for 5.3.0 - 5.3.10
int(626344) int(627176) int(626376)
Output for 5.2.10 - 5.2.17
int(84352) int(85504) Fatal error: Call to undefined function gc_collect_cycles() in /in/dfRc9 on line 26
Process exited with code 255.
Output for 5.2.7 - 5.2.9
int(85440) int(86560) Fatal error: Call to undefined function gc_collect_cycles() in /in/dfRc9 on line 26
Process exited with code 255.
Output for 5.2.3 - 5.2.6
int(85760) int(86880) Fatal error: Call to undefined function gc_collect_cycles() in /in/dfRc9 on line 26
Process exited with code 255.
Output for 5.2.2
int(83656) int(84776) Fatal error: Call to undefined function gc_collect_cycles() in /in/dfRc9 on line 26
Process exited with code 255.
Output for 5.2.1
int(83560) int(84776) Fatal error: Call to undefined function gc_collect_cycles() in /in/dfRc9 on line 26
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.1 - 5.2.0
Fatal error: Call to undefined function memory_get_usage() in /in/dfRc9 on line 22
Process exited with code 255.
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/dfRc9 on line 28
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/dfRc9 on line 5
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/dfRc9 on line 5
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/dfRc9 on line 5
Process exited with code 255.