Question

email_exists( string $email )

Checks whether the given email exists.

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description

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参数

$email

(string) (Required) Email.

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返回值

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

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源代码

File: wp-includes/user.php

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

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更新日志

Version	description
2.1.0	Introduced.

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相关函数

Uses

• wp-includes/pluggable.php: get_user_by()

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Used By

• wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php: WP_REST_Users_Controller::update_item()
• wp-admin/includes/user.php: edit_user()
• wp-includes/user.php: register_new_user()
• wp-includes/user.php: wp_insert_user()
• wp-includes/ms-functions.php: wpmu_validate_user_signup()

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User Contributed Notes

1. Skip to note content You must log in to vote on the helpfulness of this noteVote results for this note: 0You must log in to vote on the helpfulness of this note Contributed by Codex

   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";
   }