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<?php echo print_r(parse_url('//site@/path/to/file.css?query'));
Output for 5.4.7 - 5.6.3, php7@20140507 - 20141101, hhvm-3.0.1 - 3.4.0
1
Output for 4.3.0 - 5.4.6
Array ( [path] => //site@/path/to/file.css [query] => query ) 1