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详解PHP截取中文字符串的具体代码实现

WBOY
WBOYOriginal
2016-06-13 11:07:26876browse

任何一种语言都有专门针对中文处理的函数,往往这些处理方法都是比较难掌握的一部分。今天我们就向大家具体讲一下有关截取GB2312中文字符串

<ol class="dp-xml">
<li class="alt"><span><span class="tag"><span> ?php      </span></span></span></li>
<li><span>//截取中文字符串     </span></li>
<li class="alt"><span>function mysubstr($str, $start, $len) {     </span></li>
<li>
<span>    $</span><span class="attribute">tmpstr</span><span> = </span><span class="attribute-value">""</span><span>;     </span>
</li>
<li class="alt">
<span>    $</span><span class="attribute">strlen</span><span> = $start + $len;     </span>
</li>
<li>
<span>    for($</span><span class="attribute">i</span><span> = </span><span class="attribute-value">0</span><span>; $i </span><span class="tag"><span> $strlen; $i++) {     </span></span>
</li>
<li class="alt">
<span>        if(ord(substr($str, $i, 1)) </span><span class="tag">></span><span> 0xa0) {     </span>
</li>
<li>
<span>            $tmpstr </span><span class="attribute">.</span><span>= </span><span class="attribute-value">substr</span><span>($str, $i, 2);     </span>
</li>
<li class="alt"><span>            $i++;     </span></li>
<li><span>        } else    </span></li>
<li class="alt">
<span>            $tmpstr </span><span class="attribute">.</span><span>= </span><span class="attribute-value">substr</span><span>($str, $i, 1);     </span>
</li>
<li><span>    }     </span></li>
<li class="alt"><span>    return $tmpstr;     </span></li>
<li><span>}     </span></li>
<li class="alt">
<span class="tag">?></span><span>   </span>
</li>
</ol>

以上代码示例就是PHP截取中文字符串的相关实现方式。


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