I want to remove only iframe(and everyhing inside iframe)with facebook like above but to keep youtube iframe:
<iframe src="http://www.facebook.com/plugins/like.php?href=http%3A%2F%2Fwww.example.com%2F%3Fp%313098&layout=standard&show_faces=true&width=500&action=recommend&colorscheme=light" ></iframe>
To keep iframes from youtube:
<iframe width="640" height="360" src="https://www.youtube.com/embed/hiYtWYLEjlI?rel=0" frameborder="0" allowfullscreen></iframe>
I've this regex but it only remove
<\/*i(?:frame|layer)|l(?:ayer|ink)[^>]*+>
https://regex101.com/r/eM9eS3/5
Better take the xpath approach:
$xml = simplexml_load_string($your_html_string);
$iframes = $xml->xpath("//iframe[contains(#src, 'facebook.com')]");
And delete these:
for ($i=0;$i<count($iframes);$i++) {
$iframe = $iframes[$i];
unset($iframe[0][0]);
}
Your new XML looks like:
echo $xml->asXML();
As whole function:
function goAwayFacebook($html) {
$xml = simplexml_load_string($html);
$iframes = $xml->xpath("//iframe[contains(#src, 'facebook.com')]");
for ($i=0;$i<count($iframes);$i++) {
$iframe = $iframes[$i];
unset($iframe[0][0]);
}
return $xml->asXML();
}
$newhtml = goAwayFacebook($html);
So you are roughly trying to check if www.facebook.com is present in <ifram> or not. This can be achieved by using following regex.
Regex: (?=.*www\.facebook\.com.*)<iframe .*<\/iframe>
Explanation:
(?=.*www\.facebook\.com.*) checks for presence of www.facebook.com between the <iframe> tags.
Regex101 Demo
Related
I have a html string of iframe where width and it's value is included. I want to replace the width's value by regex in php. For example, I am getting a value dynamically as
<iframe width="560" height="315" src="" frameborder="0" allowfullscreen></iframe>
I want to change the value of width by the regular expression. Can you help me someone.
Avoid using RegEx in XML/HTML documents, there are a performant libraries to do that, unless there a very very very good reason for that
Try with this code to achieve your job
<?php
$html = '<iframe width="560" height="315" src="" frameborder="0" allowfullscreen></iframe>';
$doc = new DOMDocument();
$doc->loadHTML($html);
$elements = $doc->getElementsByTagName('iframe');
foreach($elements as $el) {
$el->setAttribute('width', '1024');
}
print $doc->saveHTML();
OUTPUT
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html><body><iframe width="1024" height="315" src="" frameborder="0" allowfullscreen></iframe></body></html>
sounds like a really bad idea, but here goes... something like
<?php
header('content-type:text/plain;charset=utf8');
$str=base64_decode('PGlmcmFtZSB3aWR0aD0iNTYwIiBoZWlnaHQ9IjMxNSIgc3JjPSIiIGZyYW1lYm9yZGVyPSIwIiBhbGxvd2Z1bGxzY3JlZW4+PC9pZnJhbWU+');
$ret=preg_replace('/(\<iframe.*?width\=)\"(.*?)\"/','${1}"999"',$str);
var_dump($str,$ret);
will change width to 999... but you should really use a proper HTML parser instead, like DOMDocument.
$domd=#DOMDocument::loadHTML($str);
$domd->getElementsByTagName('iframe')->item(0)->setAttribute('width',999);
echo $domd->saveHTML($domd->getElementsByTagName('iframe')->item(0));
will also change width to 999, and is much more reliable (for example, the regex will break if there is spaces or newlines between the width and = , although it would still be legal html.. sigh)
There are a lot of examples of how to convert a youtube url to embed code, but I need a reverse code. I was never successful with all those expressions, so my question is How can I convert an embed code to a URL ? Thanks in advance.
In PHP, you can do that with DOMDocument to get the src attribute of the iframe, and preg_replace() to convert it to the video url:
$embed = '<html><head></head><body><p>Hello, there is the video <iframe width="560" height="315" src="http://www.youtube.com/embed/K75a2k_6QWs" frameborder="0" allowfullscreen></iframe> what do you think?</p></body></html>';
$doc = new DOMDocument();
$doc->loadHTML($embed);
while($iframe = $doc->getElementsByTagName('p')->item(0)->getElementsByTagName('iframe')->item(0)) {
$url = preg_replace(
'~/embed/~',
'/watch?v=',
$iframe->getAttribute('src')
);
$iframe->parentNode->replaceChild(
$doc->createTextNode($url),
$iframe
);
}
echo $result = $doc->getElementsByTagName('p')->item(0)->nodeValue; //'Hello, there is the video http://www.youtube.com/watch?v=K75a2k_6QWs what do you think?'
I want to get the YouTube video ID from YouTube embed code using preg_match or regex. For a example
<iframe width="560" height="315" src="//www.youtube.com/embed/0gugBiEkLwU?rel=0" frameborder="0" allowfullscreen></iframe>
I want to take the ID 0gugBiEkLwU
Can anyone tell me how to do this. Really appropriate your help.
Using this pattern with a capturing group should give you the string you want:
d\/(\w+)\?rel=\d+"
example: https://regex101.com/r/kH5kA7/1
You can use :
src="\/\/(?:https?:\/\/)?.*\/(.*?)\?rel=\d*"
Check Demo Here
Explanation :
I know this is pretty late, but I came up with something for people who might still be looking.
Since not all Youtube iframe src attributes end in "?rel=", and can sometimes end in another query string or end with a double quote, you can use:
/embed\/([\w+\-+]+)[\"\?]/
This captures anything after "/embed/" and before the ending double-quote/query string. The selection can include any letter, number, underscore and hyphen.
Here's a demo with multiple examples: https://regex101.com/r/eW7rC1/1
The below function will extract the youtube video id from teh all format of youtube urls,
function getYoutubeVideoId($iframeCode) {
// Extract video url from embed code
return preg_replace_callback('/<iframe\s+.*?\s+src=(".*?").*?<\/iframe>/', function ($matches) {
// Remove quotes
$youtubeUrl = $matches[1];
$youtubeUrl = trim($youtubeUrl, '"');
$youtubeUrl = trim($youtubeUrl, "'");
// Extract id
preg_match("/^(?:http(?:s)?:\/\/)?(?:www\.)?(?:m\.)?(?:youtu\.be\/|youtube\.com\/(?:(?:watch)?\?(?:.*&)?v(?:i)?=|(?:embed|v|vi|user)\/))([^\?&\"'>]+)/", $youtubeUrl, $videoId);
return $youtubeVideoId = isset($videoId[1]) ? $videoId[1] : "";
}, $iframeCode);
}
$iframeCode = '<iframe width="560" height="315" src="http://www.youtube.com/embed/0gugBiEkLwU?rel=0" frameborder="0" allowfullscreen></iframe>';
// Returns youtube video id
echo getYoutubeVideoId($iframeCode);
I'm trying to pull out the video thumbnail from the TED video embed code. Why? Well, I'm using a WordPress theme that uses a custom field to handle video but the thumbnail function for that field isn't built for TED. I'm trying to re-jig it.
Here's the video thumbnail retrieval function (where YouTube and Vimeo are covered):
function woo_get_video_image($embed) {
$video_thumb = '';
/* Let's start by looking for YouTube, then Vimeo */
if ( preg_match( '/youtube/', $embed ) ) {
// YouTube - get the video code if this is an embed code (old embed)
preg_match( '/youtube\.com\/v\/([\w\-]+)/', $embed, $match);
// YouTube - if old embed returned an empty ID, try capuring the ID from the new iframe embed
if( !isset($match[1]) )
preg_match( '/youtube\.com\/embed\/([\w\-]+)/', $embed, $match);
// YouTube - if it is not an embed code, get the video code from the youtube URL
if( !isset($match[1]) )
preg_match( '/v\=(.+)&/',$embed ,$match);
// YouTube - get the corresponding thumbnail images
if( isset($match[1]) )
$video_thumb = "http://img.youtube.com/vi/".$match[1]."/0.jpg";
} else if ( preg_match( '/vimeo/', $embed ) ) {
// Vimeo - get the video thumbnail
preg_match( '#http://player.vimeo.com/video/([0-9]+)#s', $embed, $match );
if ( isset($match[1]) ) {
$video_id = $match[1];
// Try to get a thumbnail from Vimeo
$get_vimeo_thumb = unserialize(file_get_contents_curl('http://vimeo.com/api/v2/video/'. $video_id .'.php'));
$video_thumb = $get_vimeo_thumb[0]['thumbnail_large'];
}
}
// return whichever thumbnail image you would like to retrieve
return $video_thumb;
}
Here's a typical TED embed:
<iframe
src="http://embed.ted.com/talks/andy_puddicombe_all_it_takes_is_10_mindful_minutes.html"
width="560" height="315"
frameborder="0"
scrolling="no"
webkitAllowFullScreen mozallowfullscreen allowFullScreen>
</iframe>
And the TED API docs if that helps at all: http://developer.ted.com/API_Docs
I seem to be having trouble customizing the preg_match and/or $get_vimeo_thumb portions (at least that's what I think is going on). Basically, I'm learning this portion of PHP and it's bumpy.
you can try this
$source = 'http://www.ted.com/talks/andy_puddicombe_all_it_takes_is_10_mindful_minutes';
$tedJson = json_decode(file_get_contents('http://www.ted.com/talks/oembed.json?url='.urlencode($source)), TRUE);
pr($tedJson);
you will get the json in responce
I don't know what possessed me to answer this question, but here is a (tested working) quick and dirty. You'll probably want to throw some validation in there somewhere.. And if I were getting paid to do this it wouldn't be using file_get_contents and I'd probably use DOMDocument.
$embed = '<iframe
src="http://embed.ted.com/talks/andy_puddicombe_all_it_takes_is_10_mindful_minutes.html"
width="560" height="315"
frameborder="0"
scrolling="no"
webkitAllowFullScreen mozallowfullscreen allowFullScreen>
</iframe>';
function getThumbnail($embed){
preg_match("/src\=\"(.+)?\"/", $embed, $matches);
$uri = $matches[1];
preg_match("/posterUrl\s=\s\'(.+)?\'/", file_get_contents($uri), $matches);
echo $matches[1];
}
getThumbnail($embed);
We are taking the src of the iframe, getting the contents, and scrapping the JS embed variable to grab the image they use for the thumbnail.
Obviously you won't echo the output, and who knows if this is against their TOS. As a matter of fact I'd bet they at least wouldn't let you use this unless you kept the logo (which is not the case). Use at your own risk.
I have some text with images within it. I want to replace specific images within the text with something else.
i.e. the text contains an a youtube img url that I want to replace with the actual video link.
<img class="mceItem" src="http://img.youtube.com/vi/1MsVzAkmds0/default.jpg" alt="1MsVzAkmds0">
and replace it with the youtube Iframe code:
<iframe title="'.$id.'" class="youtube-player" type="text/html" width="576" height="400" src="http://www.youtube.com/embed/'.$id.'" frameborder="0"></iframe>
my function looks like this:
function replacelink($link) {
$find= ("/<img src=[^>]+\>/i");
$replace = youtube("\\2");
return preg_replace($find,$replace);
}
What do I need to change in the regex to do the above?
Your regex is looking for <img src=, but there is a class attribute between img and src. Using $find= '/<img.*src=[^>]+>/i'; corrects the problem; however, this illustrates why you shouldn’t use regex to parse HTML.
You wrote:
I have some text with images within it.
If the text you’re referring to is actually HTML, then there are better alternatives to using regex for this.
Update
I believe this is what you’re looking for.
<?php
function replacelink($text) {
$replace = '<iframe title="$2" class="youtube-player" type="text/html" width="576" height="400" <iframe title="$2" class="youtube-player" type="text/html" width="576" height="400" src="http://www.youtube.com/embed/$2" frameborder="0"></iframe>';
$find = '/(<img.*?alt="([\da-z]+)".*?>)/i';
return preg_replace($find, $replace, $text);
}
$imagestr = '<img class="mceItem" src="http://img.youtube.com/vi/1MsVzAkmds0/default.jpg" alt="1MsVzAkmds0">';
echo replacelink($imagestr);
?>
There’s no need for a separate youtube() function.
If you want to replace more than one image, use preg_replace_all() instead of preg_replace().
The following regex would get all the images with a specific url. I not sure if this is what you wanted.
<img [^>]*?src="url"[^>]*?>
Previous anwser would fail if there were more than one image.