February 12, 2011 
Definition:
function get_the_author_meta($field = '', $user_id = false) {}
Retrieve the requested data of the author of the current post.
Parameters
- string $field: selects the field of the users record.
- int $user_id: Optional. User ID.
Return values
returns:The author’s field from the current author’s DB object.
Defined filters
- get_the_author_$field
apply_filters('get_the_author_' . $field, $value, $user_id)
Source code
function get_the_author_meta($field = '', $user_id = false) {
if ( ! $user_id )
global $authordata;
else
$authordata = get_userdata( $user_id );
// Keys used as object vars cannot have dashes.
$field = str_replace('-', '', $field);
$field = strtolower($field);
$user_field = "user_$field";
if ( 'id' == $field )
$value = isset($authordata->ID) ? (int)$authordata->ID : 0;
elseif ( isset($authordata->$user_field) )
$value = $authordata->$user_field;
else
$value = isset($authordata->$field) ? $authordata->$field : '';
return apply_filters('get_the_author_' . $field, $value, $user_id);
}
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