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<?php class SimpleClass { const COSNTANT = "costant value"; private $var = "a default value"; function __construct($var) { $this->var = $var; } public function getVar() { return $this->var; } public function setVar($var) { $this->var = $var; } public function toString() { echo $this->var; } } $test = new SimpleClass("test2"); $test->setVar("test"); $test->toString(); class MyClass { const CONST_VALUE = "A constant value"; } $className = "MyClass"; echo $className::CONST_VALUE; echo MyClass::CONST_VALUE;
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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
testA constant valueA constant value

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