codice:$pattern = "#\d{8}#"; function inverti($matches) { return substr($matches[0],6,2).'/'.substr($matches[0],4,2).'/'.substr($matches[0],0,4); } echo preg_replace_callback($pattern,'inverti',$stringa);
codice:$pattern = "#\d{8}#"; function inverti($matches) { return substr($matches[0],6,2).'/'.substr($matches[0],4,2).'/'.substr($matches[0],0,4); } echo preg_replace_callback($pattern,'inverti',$stringa);