wp_get_referer() – Function | Developer.WordPress.org

Retrieves referer from ‘_wp_http_referer’ or HTTP referer.

Description

If it’s the same as the current request URL, will return false.

Return

string|false Referer URL on success, false on failure.

More Information

HTTP referer is a server variable. ‘referer’ is deliberately misspelled.

If page “refered” (form posted) to itself, returns false (because $_SERVER[‘HTTP_REFERER’] == $_REQUEST[‘_wp_http_referer’])

Source

 * If it's the same as the current request URL, will return false.
 *
 * @since 2.0.4
 *
 * @return string|false Referer URL on success, false on failure.
 */
function wp_get_referer() {
	// Return early if called before wp_validate_redirect() is defined.
	if ( ! function_exists( 'wp_validate_redirect' ) ) {
		return false;
	}

	$ref = wp_get_raw_referer();

	if ( $ref && wp_unslash( $_SERVER['REQUEST_URI'] ) !== $ref
		&& home_url() . wp_unslash( $_SERVER['REQUEST_URI'] ) !== $ref

View all references View on Trac View on GitHub