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<h2>Better Alternative for WordPress Migrations</h2> If you are moving your website and you will want to replace all references to the old site with the new domain, I suggest you use <a href="http://interconnectit.com/products/search-and-replace-for-wordpress-databases/" rel="nofollow">David Coveney's Serialized Search & Replace DB v2.1.0</a>. You'll want to run this on a new copy of the database, always have a backup handy. Import the database on the destination server, then run the tool - You don't even have to upload the server files. When I do this coming from a development server to live domain, I usually do two search & replaces: One for URLs, very basic: <pre><code>Search: mywebsite.devserver.com Replace: my-new-website.com </code></pre> And one for file paths: <pre><code>Search: /vhosts/devserver.com/mywebsite Replace: /vhosts/my-new-website.com/httpdocs (Note: This is assuming the majority of the file path is the same for both servers. Your search & replace paths may need to be more accurate) </code></pre> The reason you want serialized search and replace is that some data is stored in PHP-serialized format, and if you change the value with a text editor or in MySQL directly, it may not be able to unserialize afterwards. <hr> <h2>Regex Answer</h2> Select images hosted by blog.example.com with the following regex pattern: <code>((http|https)://blog\.example.com/[^ \r\n]+\.(jpg|jpeg|png|gif))</code> Which basically searches for this: <code>http(s)://blog.example.com/*.(jpg/png/etc)</code> Matches the URLs in the following examples: <pre><code>http://example.com/imagename.jpg http://blog.example.com/imagename.jpg http://blog.example.com/favicon.png http://blog.example.com/uploads/2013/05/kitten.gif https://blog.example.com/ssl-secure.png This is my favorite gif https://blog.example.com/some-hilarious-image.gif hahaha </code></pre> DOES NOT match any of these: <pre><code>blog.example.com/google.png https://blog.google.com/google.png our website is http://blog.example.com and has an image named /imagename.png http://blog.example.com/ </code></pre> WHY it doesn't match those (by line): <pre><code>Does not include http(s):// Hosted by google Paragraph text, where the URL is split into two parts Not an image </code></pre> <code>$1</code> returns the full URL of the image. I tested this on <a href="http://www.regextester.com/" rel="nofollow">RegexTester.com</a>. You can copy the pattern in the top field, and all of the examples in the box below. The red highlights are matches.
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1. PORegex: img src urls that don't have multiple paths
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1. USRadley Sustaire
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1. COGreat Answer. Thank you!
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