How we can get the author ID by its Name

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How can i retrieve the author id if i have its name.

I have fornt end form any user can enter the author name to filter the posts by author name so after that how can i get author id. Or there is any other way to write the query so that it return the posts which is posted by specific authors. Thanks

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2 comments

  1. get_user_by will get you the user data by ‘id’, ‘slug’, ’email’, or ‘login’.

    ‘slug’ is the user_nicename. 

    $user = get_user_by('slug','nicename');

    However, I am not sure what you mean by ‘name’. There are other plausible ‘name’ fields, not all of them required. There is the display_name for example.

    To search fields like user_nicename you will need to create a new WP_User_Query.

    $args= array(
  'search' => 'Display Name',
);
$user = new WP_User_Query($args);

    The default columns searched appear to be based on the type of data in the search field but you can restrict to particular fields by using the search_fields parameter.

    $args= array(
  'search' => 'Display Name', // or login or nicename in this example
  'search_fields' => array('user_login','user_nicename','display_name')
);
$user = new WP_User_Query($args);

  2. Strange, because I found it difficult the correct answer to this, in turn anyway, it’s a simple thing:
    Firstly you need get the author’s name (So this now you’ve got it this way either, in this example I get the comment author’s name):

    $author = get_comment_author( $comment_ID );

    And now the ID by its name:

    $the_user = get_user_by('login', '' . $author . '');
    $the_user_id = $the_user->ID;