email_exists( string $email )
Determines whether the given email exists.
Contents
Description
For more information on this and similar theme functions, check out the Conditional Tags article in the Theme Developer Handbook.
Parameters
-
(string) (Required) The email to check for existence.
Return
(int|false) The user ID on success, false on failure.
More Information
This function will check whether or not a given email address ($email) has already been registered to a username, and returns that users ID (or false if none exists). See also username_exists.
This function is normally used when a user is registering, to ensure that the E-mail address the user is attempting to register with has not already been registered.
Source
File: wp-includes/user.php
function email_exists( $email ) {
$user = get_user_by( 'email', $email );
if ( $user ) {
$user_id = $user->ID;
} else {
$user_id = false;
}
/**
* Filters whether the given email exists.
*
* @since 5.6.0
*
* @param int|false $user_id The user ID associated with the email,
* or false if the email does not exist.
* @param string $email The email to check for existence.
*/
return apply_filters( 'email_exists', $user_id, $email );
}
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Changelog
| Version | Description |
|---|---|
| 2.1.0 | Introduced. |
User Contributed Notes
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Example
If the E-mail exists, echo the ID number to which the E-mail is registered. Otherwise, tell the viewer that it does not exist.
$email = 'myemail@example.com'; $exists = email_exists( $email ); if ( $exists ) { echo "That E-mail is registered to user number " . $exists; } else { echo "That E-mail doesn't belong to any registered users on this site"; }Bear in mind: this function is not defined in
SHORTINIT