I am working with an editor that works purely with internal relative links for files which is great for 99% of what I use it for.
However, I am also using it to insert links to files within an email body and relative links don't cut the mustard.
Instead of modifying the editor, I would like to search the string from the editor and replace the relative links with external links as shown below
Replace
files/something.pdf
With
https://www.someurl.com/files/something.pdf
I have come up with the following but I am wondering if there is a better / more efficient way to do it with PHP
<?php
$string = 'A link, some other text, A different link';
preg_match_all('/<a[^>]+href=([\'"])(?<href>.+?)\1[^>]*>/i', $string, $result);
if (!empty($result)) {
// Found a link.
$baseUrl = 'https://www.someurl.com';
$newUrls = array();
$newString = '';
foreach($result['href'] as $url) {
$newUrls[] = $baseUrl . '/' . $url;
}
$newString = str_replace($result['href'], $newUrls, $string);
echo $newString;
}
?>
Many thanks
Lee
You can simply use preg_replace to replace all the occurrences of files starting URLs inside double quotes:
$string = 'A link, some other text, A different link';
$string = preg_replace('/"(files.*?)"/', '"https://www.someurl.com/$1"', $string);
The result would be:
A link, some other text, A different link
You really should use DOMdocument for such job, but if you want to use a regex, this one does the job:
$string = '<a some_attribute href="files/something.pdf" class="abc">A link</a>, some other text, <a class="def" href="files/somethingelse.pdf" attr="xyz">A different link</a>';
$baseUrl = 'https://www.someurl.com';
$newString = preg_replace('/(<a[^>]+href=([\'"]))(.+?)\2/i', "$1$baseUrl/$3$2", $string);
echo $newString,"\n";
Output:
<a some_attribute href="https://www.someurl.comfiles/something.pdf" class="abc">A link</a>, some other text, <a class="def" href="https://www.someurl.com/files/somethingelse.pdf" attr="xyz">A different link</a>
Related
I wrote a code which adds hyperlink to all plain text where it finds http:// or https://. The code works pretty well for https://www.google.com and http://yahoo.com. It converts these text into clickable hyperlink with correct address.
<?php
function convert_text_to_link($str)
{
$pattern = "/(?:(https?):\/\/([^\s<]+)|(www\.[^\s<]+?\.[^\s<]+))(?<![\.,:])/i";
return preg_replace($pattern, "<a href='$0' target='_blank'>$0</a>", $str);
}
$str = "https://www.google.com is the biggest search engine. It's competitors are http://yahoo.com and www.bing.com.";
echo convert_text_to_link($str);
?>
But when my code sees www.bing.com, though it adds hyperlink to it but the href attribute also becomes www.bing.com. There is no http:// prepended it. Therefore the link becomes unusable without the link http://localhost/myproject/www.bing.com will go nowhere.
How can I add http:// to www.bing.com so that it should become http://www.bing.com?
Here is your function. Try this.
function convert_text_to_link($str) {
$pattern = '#(http)?(s)?(://)?(([a-zA-Z])([-\w]+\.)+([^\s\.]+[^\s]*)+[^,.\s])#';
return preg_replace($pattern, '$0', $str);
}
You should try and check if this works:
window.location = window.location.href.replace(/^www./, 'https:');
might be you will get your solution.
I just got to know about some other approaches too, you can try them out as per your code and requirements:
1.
str_replace("www.","http://","$str");
The test here is case-sensitive. This means that if the string is initially this will change it to http://Http://example.com which is probably not what you want.
try regex:
if (!$str.match(/^[a-zA-Z]+:\/\//))
{
$str = 'http://' + $str;
}.
hope this helps.
I'm struggling on replacing text in each link.
$reg_ex = "/(http|https)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?/";
$text = '<br /><p>this is a content with a link we are supposed to click</p><p>another - this is a content with a link we are supposed to click</p><p>another - this is a content with a link we are supposed to click</p>';
if(preg_match_all($reg_ex, $text, $urls))
{
foreach($urls[0] as $url)
{
echo $replace = str_replace($url,'http://www.sometext'.$url, $text);
}
}
From the code above, I'm getting 3x the same text, and the links are changed one by one: everytime is replaced only one link - because I use foreach, I know.
But I don't know how to replace them all at once.
Your help would be great!
You don't use regexes on html. use DOM instead. That being said, your bug is here:
$replace = str_replace(...., $text);
^^^^^^^^--- ^^^^^---
you never update $text, so you continually trash the replacement on every iteration of the loop. You probably want
$text = str_replace(...., $text);
instead, so the changes "propagate"
If you want the final variable to contain all replacements change it so something like this...
You basically are not passing the replaced string back into the "subject". I assume that is what you are expecting since it's a bit difficult to understand the question.
$reg_ex = "/(http|https)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?/";
$text = '<br /><p>this is a content with a link we are supposed to click</p><p>another - this is a content with a link we are supposed to click</p><p>another - this is a content with a link we are supposed to click</p>';
if(preg_match_all($reg_ex, $text, $urls))
{
$replace = $text;
foreach($urls[0] as $url) {
$replace = str_replace($url,'http://www.sometext'.$url, $replace);
}
echo $replace;
}
I have some text contain html tags, I would like to replace all links with other one, but I want to replace just local links, not they start with http://
example :
test link
==> test link
Video
==> Video
I try this preg_replace but not working :
$exclude = '<a href=\"http://.*?';
$pattern = '<a href=\".*?';
$content=preg_replace("~(($exclude)?($pattern))~i",'<a href="/action.php?url=$4',$content);
Thanks!
What about something like this:
$content = preg_replace('#<a href="([^:]*)">#i', '<a href="/action.php?url=$1">', $content);
I have a script that outputs status updates and I need to write a script that automatically changes something like www.example.com into a hyper link in a chunk of text like Twitter and Facebook do. What functions can I use for this in PHP? If you know a tutorial please post it.
$string = " fasfasd http://webarto.com fasfsafa";
echo preg_replace("#http://([\S]+?)#Uis", '<a rel="nofollow" href="http://\\1">\\1</a>', $string);
Output:
fasfasd <a rel="nofollow" href="http://webarto.com">webarto.com</a> fasfsafa
You can use a regex to replace the url with a link. Look at the answers on this thread: PHP - Add link to a URL in a string.
Great solution!
I wanted to auto-link web links and also to truncate the displayed URL text, because long URLs were breaking out of the layout on some platforms.
After much fiddling around with regex, I realised the solution is actually CSS - this site gives a simple solution using CSS white-space.
Here is the working Function
function AutoLinkUrls($str,$popup = FALSE){
if (preg_match_all("#(^|\s|\()((http(s?)://)|(www\.))(\w+[^\s\)\<]+)#i", $str, $matches)){
$pop = ($popup == TRUE) ? " target=\"_blank\" " : "";
for ($i = 0; $i < count($matches['0']); $i++){
$period = '';
if (preg_match("|\.$|", $matches['6'][$i])){
$period = '.';
$matches['6'][$i] = substr($matches['6'][$i], 0, -1);
}
$str = str_replace($matches['0'][$i],
$matches['1'][$i].'</xmp><a href="http'.
$matches['4'][$i].'://'.
$matches['5'][$i].
$matches['6'][$i].'"'.$pop.'>http'.
$matches['4'][$i].'://'.
$matches['5'][$i].
$matches['6'][$i].'</a><xmp>'.
$period, $str);
}//end for
}//end if
return $str; }
Say i have a string of text such as
$text = "Hello world, be sure to visit http://whatever.com today";
how can i (probably using regex) insert the anchor tags for the link (showing the link itself as the link text) ?
You can use regexp to do this:
$html_links = preg_replace('"\b(https?://\S+)"', '$1', $text);
I write this function.
It replaces all the links in a string. Links can be in the following formats :
www.example.com
http://example.com
https://example.com
example.fr
The second argument is the target for the link ('_blank', '_top'... can be set to false).
Hope it helps...
public static function makeLinks($str, $target='_blank')
{
if ($target)
{
$target = ' target="'.$target.'"';
}
else
{
$target = '';
}
// find and replace link
$str = preg_replace('#((https?://)?([-\w]+\.[-\w\.]+)+\w(:\d+)?(/([-\w/_\.~]*(\?\S+)?)?)*)#', '<a href="$1" '.$target.'>$1</a>', $str);
// add "http://" if not set
$str = preg_replace('/<a\s[^>]*href\s*=\s*"((?!https?:\/\/)[^"]*)"[^>]*>/i', '<a href="http://$1" '.$target.'>', $str);
return $str;
}
Edit: Added tilde to make urls work better https://regexr.com/5m16v