CODEWITHSUNDEEP
php
JeanDavidD
JeanDavidD

Reputation: 299

Find a hashtag in a string in php

I would like to add a link around my string which is 

    "My new Tweet **#new** this is cool".

And I would like to get the hashtag #new to wrap into a link.

After that, I'll get :

    "My new Tweet <a href="http://twitter.com/search/%23new">new</a> this is cool.

How could I do that?

Upvotes: 1

Views: 2186

Answers (3)

FtDRbwLXw6
FtDRbwLXw6

Reputation: 28891

This would probably do it:

$yourString = 'My new Tweet **#new** this is cool';

$yourString = preg_replace_callback('/\*\*(#(.+?))\*\*/', function($matches) {
    $html = '<a href="http://twitter.com/search/%s">%s</a>';
    return sprintf($html, urlencode($matches[1]), htmlentities($matches[2]));
}, $yourString);

Upvotes: 1

Lorenzo Marcon
Lorenzo Marcon

Reputation: 8169

Assuming that your hastags contain only letters and numbers, you can use the following code:

$string = preg_replace('/\*\*#([a-zA-Z0-9]+)\*\*/', '<a href="http://twitter.com/search/%23$1">$1</a>', $string);

You can easily change the content of the regex as needed.

Upvotes: 1

jessica
jessica

Reputation: 3131

Try this:

$string = "My new Tweet **#new** this is cool".
$linked_string = preg_replace('/\*\*(\#(.*?))\*\*/', '<a href="http://twitter.com/search/$1">$2</a>', $string);

Upvotes: 2

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