PHP判断是中文还是英文，

<span>static</span> <span>function</span> ischinese(<span>$s</span><span>){
 
        </span><span>$allen</span> = <span>preg_match</span>("/^[^/x80-/xff]+$/", <span>$s</span>);   <span>//</span><span>判断是否是英文</span>
        <span>$allcn</span> = <span>preg_match</span>("/^[".<span>chr</span>(0xa1)."-".<span>chr</span>(0xff)."]+$/",<span>$s</span>);  <span>//</span><span>判断是否是中文</span>
        <span>if</span>(<span>$allen</span><span>){  
              </span><span>return</span> 'allen'<span>;  
        }</span><span>else</span><span>{  
              </span><span>if</span>(<span>$allcn</span><span>){  
                   </span><span>return</span> 'allcn'<span>;  
              }</span><span>else</span><span>{  
                   </span><span>return</span> 'encn'<span>;  
              }  
        }  
               
   }</span>