WordPress Quick Tips

Archive for March 2010

WordPress saves Objects and Arrays as serialized strings

Posted by: Vincent on: March 24, 2010

If you often use functions such as update_option, update_post_meta (or any meta-function for that matter) it might be useful to know that the value you pass can be mixed. When looking the function reference for add_post_meta, it says that the value must be a string. But the value may also be an array, or even [...]

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Google Charts?

Posted by: Vincent on: March 23, 2010

Google Charts in WordPress? Hmm, maybe!

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Style WordPress images and captions

Posted by: Vincent on: March 22, 2010

When inserting an image into the rich text editor you get the following: When viewing the code in the HTML tab you see that the following Shortcode is created: And the Shortcode creates the following HTML: When developing new themes it really helps to use the existing markup. You could redo the HTML if you [...]

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How to change the allowed HTML tags for WordPress

Posted by: Vincent on: March 12, 2010

WordPress by default filters out potentially harmful and/or invalid HTML. But in some cases you might want some of that invalid HTML! One of those cases occurred today when we needed to embed a Google Form in a post. To do so, Google provides you with HTML code that contains a iframe, but uh-oh! The [...]

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Never use PHP short tags for WordPress development

Posted by: Vincent on: March 5, 2010

Today while working on a project where we had collaborated with freelance developers I noticed that some pages weren’t looking as they should. A quick glance at the code revealed that the developer was using “short tags” to include the header. To use short tags, the short_open_tag option must be turned on in php.ini. On [...]

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Embed Flash files in WordPress

Posted by: Vincent on: March 2, 2010

While developing a site for a client a need emerged for us to be able to embed Flash files in the content. To do so you could paste some HTML in the content editor and hope for it not to be parsed away. And to keep it the HTML or XHTML  valid while doing so, [...]

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