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<?php $tests = [ "hello", "hello:me", "hello::me", "::me", "hello::hello::me", ]; foreach ($tests as $test) { preg_match_all('/([^:]+)::(.+)/', $test, $matches); print_r($matches); echo PHP_EOL; }
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => Array ( ) [1] => Array ( ) [2] => Array ( ) ) Array ( [0] => Array ( ) [1] => Array ( ) [2] => Array ( ) ) Array ( [0] => Array ( [0] => hello::me ) [1] => Array ( [0] => hello ) [2] => Array ( [0] => me ) ) Array ( [0] => Array ( ) [1] => Array ( ) [2] => Array ( ) ) Array ( [0] => Array ( [0] => hello::hello::me ) [1] => Array ( [0] => hello ) [2] => Array ( [0] => hello::me ) )

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