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run code in 150+ php & hhvm versions
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<?php class Test { private $property = array('test value '); public function & getProperty() { return $this->property; } public function __destruct() { echo "Test is destroying itself..."; $this->property = array(); } } class TestConsumer { private $test; public function __construct(Test $test) { $this->test = & $test->getProperty(); } public function doSomething() { echo $this->test[0]; } } $test = new Test(); $test = new TestConsumer($test); $test->doSomething(); gc_disable(); $test = new Test(); $test = new TestConsumer($test); $test->doSomething(); gc_enable();
based on kaplA
Output for 5.3.0 - 5.6.28, 7.0.0 - 7.1.0
Test is destroying itself... Notice: Undefined offset: 0 in /in/fPdOW on line 30 Test is destroying itself... Notice: Undefined offset: 0 in /in/fPdOW on line 30
Output for hhvm-3.10.0 - 3.12.0
Test is destroying itself... Notice: Undefined index: 0 in /in/fPdOW on line 30 Test is destroying itself... Notice: Undefined index: 0 in /in/fPdOW on line 30
Output for 5.0.0 - 5.2.17
Test is destroying itself... Notice: Undefined offset: 0 in /in/fPdOW on line 30 Fatal error: Call to undefined function gc_disable() in /in/fPdOW on line 39
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/fPdOW 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/fPdOW 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/fPdOW on line 5
Process exited with code 255.