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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )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.
| Line | Code |
|---|---|
| 73 | |
| 74 | if ( is_multisite() ) { |
| 75 | $login_header_url = network_home_url(); |
| 76 | $login_header_title = $current_site->site_name; |
| 77 | } else { |
| 78 | $login_header_url = __( 'http://wordpress.org/' ); |
| 79 | $login_header_title = __( 'Powered by WordPress' ); |
| 80 | } |
| 81 | |
| 82 | $login_header_url = apply_filters( 'login_headerurl', $login_header_url ); |
| 83 | $login_header_title = apply_filters( 'login_headertitle', $login_header_title ); |
| 84 | |
| 85 | // Don't allow interim logins to navigate away from the page. |
| 86 | if ( $interim_login ) |
| 87 | $login_header_url = '#'; |
| 88 | |
| 89 | $classes = array( 'login-action-' . $action, 'wp-core-ui' ); |
| 90 | if ( wp_is_mobile() ) |
| 91 | $classes[] = 'mobile'; |