Wordpress general helpers

wp-helpers.php

<?php

/**
 Utility funcitons for passing (ahum) "variables" between wp templates
**/

$sg_univeral_vars = array();

/**
 * Add key values that can be retrived w/in other wp templates.
 *
 * @uses $sg_univeral_vars
 *
 * @param string $k Key for the pair.
 * @param string $v Value for the pair.
 */
function sg_set_universal_var($k, $v) {
	global $sg_univeral_vars;

	$sg_univeral_vars[$k] = $v;

}

/**
 * Retrieve value set by sg_set_univeral_var
 *
 * @uses $sg_univeral_vars
 *
 * @param string $k Key for lookup.
 * @param string $default Fallback value if array key doesn't exist.
 *
 * @return bool|string false if a key and default aren't set, string otherwise.
 */
function sg_get_universal_var($k, $default = null) {
	global $sg_univeral_vars;

	if (isset($sg_univeral_vars[$k])) {
		return $sg_univeral_vars[$k];
	}

	if ($default) {
		return $default;
	}

	return false;
}

/**
 Utility functions to augment wp's body_class() output.
 **/

$sg_body_classes = array();

/**
 * Add classes for the body element.
 *
 * @uses $sg_body_classes
 *
 * @param string|array $class One or more classes to add to the class list.
 */
function sg_add_body_class($class = '') {
	global $sg_body_classes;

	if (!is_array($class)) {
		$class = preg_split( '#\s+#', $class );
	}

	foreach ($class as $c) {
		$sg_body_classes[$c] = $c;
	}
}

/**
 * Remove classes for the body element.
 *
 * @uses $sg_body_classes
 *
 * @param string|array $class One or more classes to remove from the class list.
 */
function sg_remove_body_class($class = '') {
	global $sg_body_classes;

	if (!is_array($class)) {
		$class = preg_split( '#\s+#', $class );
	}

	foreach ($class as $c) {
		if (isset($sg_body_classes[$c])) {
			unset($sg_body_classes[$c]);
		}
	}
}

/**
 * Merge custom classes with wp's classes for the body element as an array.
 *
 * @uses $sg_body_classes
 *
 * @param array $classes Classes already set by wp.
 * @return array Array of classes.
 */
function sg_merge_body_class($classes) {
	global $sg_body_classes;

	$classes = array_merge($classes, $sg_body_classes);

    return $classes;
}
add_filter( 'body_class', 'sg_merge_body_class');