晕。onclick这种是客户端的JS代码。怎么可能调用PHP的函数
有一个办法可以实现你想要的功能
<iframe width=0 height=0 id='hidden'>
</iframe>
<input type='button' value='删除' onclick="document.frames.hidden.location.href='del.php?pin=234'">
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del.phpif(  mysql_connect("localhost","wlxt","wlxt")           )                
{                 
                           
                                
       $link_ID = mysql_connect("localhost","wlxt","wlxt");                     
mysql_select_db( "wlxt1");           
    echo( "connect success!");    
    mysql_query ( "delete from user where pin='".$_GET['pin]."'",$link_ID);   
    mysql_close($link_ID);