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<?php $pattern = '#^(?:https?://)?(?:[a-z0-9-]+\.)*((?:[a-z0-9-]+\.)[a-z]+)#'; if (filter_var("http://example.com.-1", FILTER_VALIDATE_URL)) { echo "URL passed PHP Filter"; } else { echo "URL did not pass PHP Filter"; }
Output for git.master, git.master_jit, rfc.property-hooks
URL did not pass PHP Filter

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