YOURLS / YOURLS

user/plugins/random-bg/plugin.php

<?php
/*

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Plugin Name: Random Backgrounds

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Plugin URI: http://yourls.org/

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Description: Pretty random background patterns

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Version: 1.0

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Author: Ozh

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Author URI: http://ozh.org/

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*/

// No direct call
if( !defined( 'YOURLS_ABSPATH' ) ) die();

// Add the inline style
yourls_add_action( 'html_head', 'ozh_yourls_randombg' );
function ozh_yourls_randombg() {
	$bg = glob( __DIR__.'/img/*png' );
	$url = yourls_plugin_url( __DIR__ );
	$rnd = yourls_plugin_url( $bg[ mt_rand( 0, count( $bg ) - 1 ) ] );
	echo <<<CSS
<style type="text/css">
		body {background:#e3f3ff url($rnd) repeat;}
	</style>

CSS;
}