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<?php class example { public $aliases = [ 'foo' => 'bar', 'biz' => 'baz', 'blimp' => [ 'foobar', 'baz', ] ]; public function test($search) { foreach($this->aliases as $alias => $value){ if(is_array($value) && in_array($search, $value, true)){ $aliases[] = $alias; } elseif($search === $value){ $aliases[] = $alias; } } var_dump($aliases); } } (new example)->test('baz');
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [0]=> string(3) "biz" [1]=> string(5) "blimp" }

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