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<?php class t { const A = 1; function __construct() { $r = new ReflectionClass($this); var_dump($r->hasConstant('A')); var_dump($r->hasConstant('c')); var_dump($r->hasConstant('A'), self::A); } protected function getA() { return self::A; } protected function getB() { return self::B; } } class s extends t { const A = 2; const B = 3; function __construct() { $r = new ReflectionClass($this); var_dump($r->hasConstant('A'), self::A, $this->getA()); } } $t = new t; $s = new s;
Output for git.master, git.master_jit, rfc.property-hooks
bool(true) bool(false) bool(true) int(1) bool(true) int(2) int(1)

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