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function mb_str_split($str,$split_length=1,$charset="UTF-8"){ if(func_num_args()==1){ return preg_split('/(?<!^)(?!$)/u', $str); } if($split_length<1)return false; $len = mb_strlen($str, $charset); $arr = array(); for($i=0;$i<$len;$i+=$split_length){ $s = mb_substr($str, $i, $split_length, $charset); $arr[] = $s; } return $arr; } print_r(mb_str_split('lizhenqiu.com')); print_r(mb_str_split('中文字符串'));
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