WordPress at a glance
function is not described

wp_cache_is_rejected() WPSCache 1.0

No Hooks.

Return

Null. Nothing.

Usage

wp_cache_is_rejected( $uri );

Code of wp_cache_is_rejected() WPSCache 1.7.1

<?php
function wp_cache_is_rejected($uri) {
	global $cache_rejected_uri;

	$auto_rejected = array( '/wp-admin/', 'xmlrpc.php', 'wp-app.php' );
	foreach( $auto_rejected as $u ) {
		if( strstr( $uri, $u ) )
			return true; // we don't allow caching of wp-admin for security reasons
	}
	if ( false == is_array( $cache_rejected_uri ) )
		return false;
	foreach ( $cache_rejected_uri as $expr ) {
		if( $expr != '' && @preg_match( "~$expr~", $uri ) )
			return true;
	}
	return false;
}