email_exists( string $email )

Determines whether the given email exists.

Description

For more information on this and similar theme functions, check out the Conditional Tags article in the Theme Developer Handbook.

(int|false) The user ID on success, false on failure.

function email_exists( $email ) {
	if ( $user = get_user_by( 'email', $email) ) {
		return $user->ID;
	}
	return false;
}

Uses
Uses	Description
wp-includes/user.php: email_exists	Filters whether the given email exists.
wp-includes/pluggable.php: get_user_by()	Retrieves user info by a given field.
wp-includes/plugin.php: apply_filters()	Calls the callback functions that have been added to a filter hook.

Used By
Used By	Description
wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php: WP_REST_Users_Controller::update_item()	Updates a single user.
wp-includes/user.php: send_confirmation_on_profile_email()	Sends a confirmation request email when a change of user email address is attempted.
wp-includes/user.php: register_new_user()	Handles registering a new user.
wp-includes/user.php: wp_insert_user()	Inserts a user into the database.
wp-includes/ms-functions.php: wpmu_validate_user_signup()	Sanitizes and validates data required for a user sign-up.
wp-admin/includes/user.php: edit_user()	Edit user settings based on contents of $_POST

Changelog
Version	Description
2.1.0	Introduced.