How do I turn URLs in a string into clickable links using PHP?

Linda Hamilton
Release: 2024-10-28 00:01:02
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How do I turn URLs in a string into clickable links using PHP?

Linking URLs in a String with PHP

Problem:

Given a string containing URLs, one needs to convert these URLs into clickable links. The original string may contain multiple URLs.

Solution:

PHP offers several approaches to linkify URLs in a string:

Using preg_replace()

This function can be employed as follows:

<code class="php">$string = "Look on http://www.google.com";
$string = preg_replace("~[[:alpha:]]+://[^<>[:space:]]+[[:alnum:]/]~", "<a href=\"\0\">\0</a>", $string);</code>
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Using ereg_replace()

For PHP versions prior to 5.3, ereg_replace() provides an alternative:

<code class="php">$string = "Look on http://www.google.com";
$string = ereg_replace("~[[:alpha:]]+://[^<>[:space:]]+[[:alnum:]/]~", "<a href=\"\0\">\0</a>", $string);</code>
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Both methods effectively convert URLs in the string into clickable links.

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