Source View: validate_username

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Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

  • Action hooks look like this: do_action( "hook_name" )
  • Filter hooks look like this: apply_filters( "hook_name", "what_to_filter" ).

Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.

Source View

Line Code
1224  * @since 2.0.1
1225  * @uses apply_filters() Calls 'validate_username' hook on $valid check and $username as parameters
1226  *
1227  * @param string $username Username.
1228  * @return bool Whether username given is valid
1229  */
1230 function validate_username( $username ) {
1231      $sanitized = sanitize_user( $username, true );
1232      $valid = ( $sanitized == $username );
1233      return apply_filters( 'validate_username', $valid, $username );
1234 }
1235
1236 /**
1237  * Insert an user into the database.
1238  *
1239  * Can update a current user or insert a new user based on whether the user's ID
1240  * is present.
1241  *
1242  * Can be used to update the user's info (see below), set the user's role, and