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<?php $query = preg_replace('/[^a-zA-Z0-9.-\s]+/', '_', 'Lorem ipsum - dolor sit - amet'); var_dump($query);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: preg_replace(): Compilation failed: invalid range in character class at offset 15 in /in/2WEgW on line 2 NULL

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