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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 |
|---|---|
| 1321 | /** |
| 1322 | * Filters the markup of header images. |
| 1323 | * |
| 1324 | * @since 4.4.0 |
| 1325 | * |
| 1326 | * @param string $html The HTML image tag markup being filtered. |
| 1327 | * @param object $header The custom header object returned by 'get_custom_header()'. |
| 1328 | * @param array $attr Array of the attributes for the image tag. |
| 1329 | */ |
| 1330 | return apply_filters( 'get_header_image_tag', $html, $header, $attr ); |
| 1331 | } |
| 1332 | |
| 1333 | /** |
| 1334 | * Displays the image markup for a custom header image. |
| 1335 | * |
| 1336 | * @since 4.4.0 |
| 1337 | * |
| 1338 | * @param array $attr Optional. Attributes for the image markup. Default empty. |
| 1339 | */ |