Adds meta data to a user.

$user_id int Required

User ID.

$meta_key string Required

Metadata name.

$meta_value mixed Required

Metadata value. Must be serializable if non-scalar.

$unique bool Optional

Whether the same key should not be added.

Default: false

int|false Meta ID on success, false on failure.

File: wp-includes/user.php. View all references

function add_user_meta( $user_id, $meta_key, $meta_value, $unique = false ) {
	return add_metadata( 'user', $user_id, $meta_key, $meta_value, $unique );
}