[RESOLVED] PHP remove Selected tags by id or class

@php_hazard_01Nov 06.2007

here, i searched for this and i havent found or understood any similar solution to this problem.

in case i have this string

[code=html] <div id=”to_remove”> </div> <div id=”retain”>Do Not Remove</div> <a class=”to_remove”>Remove</a><br/> <div class=”to_retain”>This</div> <input onclick=”remove this;”/> [/code]

how can i remove the html tag with id and class `to_remove`. i mean the whole div tag. and how can i remove the `onclick`,`onload`, or any event javascript from html.

thank you for a kind response..

function would look like

[code=php] function strip_selected_tags_by_id_or_class($array_of_id_or_class){ //logic… } [/code]

the output would be…

[code=html] <div id=”retain”>Do Not Remove</div><br/> <div class=”to_retain”>This</div> <input /> [/code]

to post a comment

PHP

11 Comments(s) _↴

@jasonahouleNov 06.2007 — #It is in no way perfect but it should be easy enough to polish it and adjust it to your needs.

<i>
 </i>&lt;html&gt;
 &lt;head&gt;
 &lt;title&gt;&lt;/title&gt;
 &lt;script type="text/javascript"&gt;
 function removeItem(id) {
 element = document.getElementById(id);
 if(element == null) {
 allElements = document.all ? document.all : document.getElementsByTagName('*');
 count = allElements.length;
 for(i=0; i&lt; count; i++) {
 try {
 allElements[i].className
 if(allElements[i].className == id) {
 remove(allElements[i]);
 }
 } catch (err) {
 // no class name defined
 }
 }
 } else {
 remove(element);
 }
 }
 function remove(element) {
 if(element.tagName == 'INPUT') {
 element.removeAttribute('onclick');
 } else {
 element.parentNode.removeChild(element);
 }
 }
 &lt;/script&gt;
 &lt;/head&gt;
 &lt;body&gt;
 &lt;div id="parent"&gt;
 This is the parent
 &lt;div id="child"&gt;
 This is the child
 &lt;/div&gt;
 &lt;div class="myClass"&gt;
 This is the class
 &lt;/div&gt;
 &lt;/div&gt;
 &lt;input type="button" value="remove id" onclick="removeItem('child')"/&gt;
 &lt;input type="button" value="remove class" onclick="removeItem('myClass')"/&gt;
 &lt;input type="button" value="remove event" onclick="removeItem('myButton')" class="myButton"/&gt;
 &lt;/body&gt;
 &lt;/html&gt;

@bokehNov 06.2007 — #I think he wants to clean this up with PHP before it is sent to the client.

@php_hazard_01authorNov 06.2007 — #yes, i really need it in PHP..but i think javascript can suffice...thank you...im still looking for a PHP solution to this..

THank You

@bokehNov 07.2007 — #Will there be any nested divs? Example:[code=html]<div id="to_remove"><div id="retain">Do Not Remove</div></div>[/code]or[code=html]<div id="to_remove"><div id="other_id">Child div</div></div>[/code]

@php_hazard_01authorNov 07.2007 — #hmmm..another problem, okay, in this case, no nested divs. but i would like to see some implementation about removing outer divs and retaining the inner ones...

well, for this problem, no..no nested divs..thanks bokeh for presenting that..

@NogDogNov 07.2007 — #

[code=php]
 function strip_selected_tags_by_id_or_class($array_of_id_or_class, $text)
 {
 $name = implode('|', $array_of_id_or_class);
 $regex = '#<(w+)s[^>]*(class|id)s*=s*['"](' . $name .
 ')['"][^>]*>.*</\1>#isU';
 return(preg_replace($regex, '', $text));
 }
 [/code]

@php_hazard_01authorNov 07.2007 — #i love you nogdog!!!!!!!!!!............i really do!!!!.......

i wish i can understand regex like you do...it's like a different language...

havent started studying it yet..?

i'll try it out now..

@bokehNov 07.2007 — #

[code=php]
 function strip_selected_tags_by_id_or_class($array_of_id_or_class, $text)
 {
 $name = implode('|', $array_of_id_or_class);
 $regex = '#<(w+)s[^>]*(class|id)s*=s*['"](' . $name .
 ')['"][^>]*>.*</\1>#isU';
 return(preg_replace($regex, '', $text));
 }
 [/code]

[/QUOTE]Just a couple of things: First if you are going to use external data in your expression you need to use preg_quote on the data before turning it into an expression. Using the default delimiter will mean preg_quote doesn't need the second argument. Also I would use a backreference to match quote styles.

[CODE]function strip_selected_tags_by_id_or_class($array_of_id_or_class, $text)
 {
 [COLOR="Red"][B]$array_quoted = array_map('preg_quote', $array_of_id_or_class);[/B][/COLOR]
 $name = implode('|', [COLOR="Red"][B]$array_quoted[/B][/COLOR]);
 $regex = '[COLOR="Red"][B]/[/B][/COLOR]<(w+)s[^>]*([COLOR="Red"][B]?:[/B][/COLOR]class|id)s*=s*[COLOR="Red"][B](['"])[/B][/COLOR]([COLOR="Red"][B]?:[/B][/COLOR]' . $name .
 ')[COLOR="Red"][B]2[/B][/COLOR][^>]*>.*</\1>[COLOR="Red"][B]/[/B][/COLOR]isU';
 return(preg_replace($regex, '', $text));
 }[/CODE]

@php_hazard_01authorNov 07.2007 — #what do you mean?..sorry if i dont get this too much, im a newb in regex functions... sorry, i do not understand regex..LoL, please translate it in english,

sorry, i havent learned regex yet..i will later on..but for now, you guys are my only solution..

@bokehNov 07.2007 — #please translate it in english[/QUOTE]What is it in particular about my use of English that you find difficult to understand?

@php_hazard_01authorNov 08.2007 — #haha..LoL, nvermind, thanks anyway..dude, please check my other thread titled get id name of dynamically loaded list on the javascript section..

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