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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 |
|---|---|
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * Filter link URL of the header logo above login form. |
| 106 | * |
| 107 | * @since 2.1.0 |
| 108 | * |
| 109 | * @param string $login_header_url Login header logo URL. |
| 110 | */ |
| 111 | $login_header_url = apply_filters( 'login_headerurl', $login_header_url ); |
| 112 | /** |
| 113 | * Filter the title attribute of the header logo above login form. |
| 114 | * |
| 115 | * @since 2.1.0 |
| 116 | * |
| 117 | * @param string $login_header_title Login header logo title attribute. |
| 118 | */ |
| 119 | $login_header_title = apply_filters( 'login_headertitle', $login_header_title ); |
| 120 | |