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<?php function _normalizaString($string) { $a = "ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõöøùúûýýþÿŔŕ"; $b = "aaaaaaaceeeeiiiidnoooooouuuuybsaaaaaaaceeeeiiiidnoooooouuuyybyRr"; $string = strtr(utf8_decode($string), utf8_decode($a), $b); return preg_replace('/\s+/', ' ', trim(strtolower($string), '()[]{}._\t\b\r')); } echo _normalizaString('ação');

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