Question

validate_username( string $username )

Checks whether a username is valid.

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description

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参数

$username

(string) (Required) Username.

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返回值

(bool) Whether username given is valid

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源代码

File: wp-includes/user.php

function validate_username( $username ) {
	$sanitized = sanitize_user( $username, true );
	$valid = ( $sanitized == $username && ! empty( $sanitized ) );

	/**
	 * Filters whether the provided username is valid or not.
	 *
	 * @since 2.0.1
	 *
	 * @param bool   $valid    Whether given username is valid.
	 * @param string $username Username to check.
	 */
	return apply_filters( 'validate_username', $valid, $username );
}

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更新日志

Version	description
4.4.0	Empty sanitized usernames are now considered invalid
2.0.1	Introduced.

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相关函数

Uses

• wp-includes/formatting.php: sanitize_user()
• wp-includes/plugin.php: apply_filters()
• wp-includes/user.php: validate_username

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Used By

• wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php: WP_REST_Users_Controller::check_username()
• wp-admin/includes/user.php: edit_user()
• wp-includes/user.php: register_new_user()

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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 ( ! empty( $_POST['username'] ) && validate_username( $_POST['username'] ) ) {
   	// Go ahead and save the user...
   }