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<?php $fn = 'Liz & Noël'; $ln = 'John-Evan’s 2nd'; function process( $str ) { $str = iconv('utf-8', 'us-ascii//TRANSLIT', $str); $str = strtolower($str); return preg_replace('~[^A-Za-z]+~u', '', $str); } echo process($fn) . '-' . process($ln);

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