This snipped will display a different image for each day of the week. As pointless as it is, it was requested way back in the Internoetics days. Create an image as monday.jpg, tuesday.jpg, and so on.
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<?php
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/*
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Display a Different Image Each Day of the Week with PHP
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http://www.beliefmedia.com/code/php-snippets/day-image
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*/
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function beliefmedia_day_image($images = 'images/dir') {
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return (file_exists($images . '/' . $today . '.jpg')) ? '<img width="50" height="50" src="' . $images . '/' . $today . '.jpg" border="0">' : 'No image was found for ' . $today;
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}
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/* Usage */
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echo beliefmedia_day_image();
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?>
There's also a shortcode function.
If you wanted to expand upon the code above, you could create all sorts of image combination effects.
View the PHP 
manual for ideas on date usage.
