DeDecms教程

//增加必填字段判断 
    if($required!=''){ 
    if(preg_match('/,/', $required)) 
        { 
            $requireds = explode(',',$required); 
            foreach($requireds as $field){ 
                if($$field==''){ 
                    showMsg('带*号的为必填内容，请正确填写', '-1'); 
                exit(); 
                } 
            } 
    }else{ 
            if($required==''){ 
                showMsg('带*号的为必填内容，请正确填写', '-1'); 
                exit(); 
            } 
        } 
    } 
    //end 

<input type="hidden" name="required" value="content,name,tel" />