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<?php $string = 'HDO Intranet — Futar.png'; $encoded = htmlentities($string); $result = $encoded; $result = preg_replace('/[^a-zA-Z\d\s-_\.]/', '', $result); echo $result;
Output for git.master, git.master_jit, rfc.property-hooks
Warning: preg_replace(): Compilation failed: invalid range in character class at offset 12 in /in/m2N0B on line 8

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