classComment

private$data=array();

publicfunction__construct($row)

/Theconstructor

$this->data=$row;

publicfunctionmarkup()

/ThismethodoutputstheXHTMLmarkupofthecomment

//Settingupanalias,sowedon'thavetowrite$this->dataeverytime:

$d=&$this->data;

$link_open='';

$link_close='';

if($d['url']){

//IfthepersonhasenteredaURLwhenaddingacomment,0);">//defineopeningandclosinghyperlinktags

$link_open='<ahref="'.$d['url'].'">';

$link_close='</a>';

}

//ConvertingthetimetoaUNIXtimestamp:

$d['dt']=strtotime($d['dt']);

//Neededforthedefaultgravatarimage:

$url='http://'.dirname($_SERVER['SERVER_NAME'].$_SERVER["REQUEST_URI"]).'/img/default_avatar.gif';

return'

<divclass="comment">

<divclass="avatar">

'.$link_open.'

<imgsrc=""/>

'.$link_close.'

<divclass="name">'.$link_open.$d['name'].$link_close.'</div>

<divclass="date"title="Addedat'.date('H:i\o\ndMY',$d['dt']).'">'.date('dMY',$d['dt']).'</div>

<p>'.$d['body'].'</p>

</div>

';

publicstaticfunctionvalidate(&$arr)

{

/*

/ThismethodisusedtovalidatethedatasentviaAJAX.

/

/Itreturntrue/falsedependingonwhetherthedataisvalid,andpopulates

/the$arrarraypassedasaparemter(noticetheampersandabove)with

/eitherthevalidinputdata,ortheerrormessages.

*/

$errors=array();

$data=array();

//Usingthefilter_inputfunctionintroducedinPHP5.2.0

if(!($data['email']=filter_input(INPUT_POST,'email',FILTER_VALIDATE_EMAIL)))

{

$errors['email']='PleaseenteravalidEmail.';

if(!($data['url']=filter_input(INPUT_POST,'url',FILTER_VALIDATE_URL)))

//IftheURLfieldwasnotpopulatedwithavalidURL,0);">//actasifnoURLwasenteredatall:

$url='';

//Usingthefilterwithacustomcallbackfunction:

if(!($data['body']=filter_input(INPUT_POST,'body',FILTER_CALLBACK,array('options'=>'Comment::validate_text'))))

$errors['body']='Pleaseenteracommentbody.';

}

if(!($data['name']=filter_input(INPUT_POST,'name',array('options'=>'Comment::validate_text'))))

$errors['name']='Pleaseenteraname.';

if(!empty($errors)){

//Ifthereareerrors,copythe$errorsarrayto$arr:

$arr=$errors;

returnfalse;

//Ifthedataisvalid,sanitizeallthedataandcopyitto$arr:

foreach($dataas$k=>$v){

$arr[$k]=MysqL_real_escape_string($v);

//Ensurethattheemailislowercase:

$arr['email']=strtolower(trim($arr['email']));

returntrue;

privatestaticfunctionvalidate_text($str)

/ThismethodisusedinternallyasaFILTER_CALLBACK

if(mb_strlen($str,'utf8')<1)

//Encodeallhtmlspecialcharacters(<,>,",&..etc)andconvert

//thenewlinecharactersto<br>tags:

$str=nl2br(htmlspecialchars($str));

//Removethenewlinecharactersthatareleft

$str=str_replace(array(chr(10),chr(13)),'',0);">$str);

return$str;

原文地址:http://www.freejs.net/article_biaodan_70.html