这里提供一款支持中文汉字与英文混合在一起的截取功能,包括对html标签等进来处理,下面我们来看看这款截取函数吧.
中英文字符串截取函数(包括html),实例代码如下:
- function get_word($string, $length, $dot = '..',$charset='gbk') {
- if(strlen($string) <= $length) {
- return $string;
- }
- $string = str_replace(array(&#39; &#39;,&#39; &#39;, &#39;&&#39;, &#39;"&#39;, &#39;<&#39;, &#39;>&#39;), array(&#39;&#39;,&#39;&#39;,&#39;&&#39;, &#39;"&#39;, &#39;<&#39;, &#39;>&#39;), $string);
- $strcut = &#39;&#39;;
- if(strtolower($charset) == &#39;utf-8&#39;) {
- $n = $tn = $noc = 0;
- while($n < strlen($string)) {
- $t = ord($string[$n]);
- if($t == 9 || $t == 10 || (32 <= $t && $t <= 126)) {
- $tn = 1; $n++; $noc++;
- } elseif(194 <= $t && $t <= 223) {
- $tn = 2; $n += 2; $noc += 2;
- } elseif(224 <= $t && $t < 239) {
- $tn = 3; $n += 3; $noc += 2;
- } elseif(240 <= $t && $t <= 247) {
- $tn = 4; $n += 4; $noc += 2;
- } elseif(248 <= $t && $t <= 251) {
- $tn = 5; $n += 5; $noc += 2;
- } elseif($t == 252 || $t == 253) {
- $tn = 6; $n += 6; $noc += 2;
- } else {
- $n++;
- }
- if($noc >= $length) {
- break;
- }
- }
- if($noc > $length) {
- $n -= $tn;
- }
- $strcut = substr($string, 0, $n);
- } else {
- for($i = 0; $i < $length; $i++) {
- $strcut .= ord($string[$i]) > 127 ? $string[$i].$string[++$i] : $string[$i];
- }
- }
- return $strcut.$dot;
- }
- $str = "欢迎 visit 简明 nowamagic";
- $str_result = get_word($str, 12);
- echo $str_result;