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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 |
|---|---|
| 1872 | |
| 1873 | /** |
| 1874 | * Filters a sanitized key string. |
| 1875 | * |
| 1876 | * @since 3.0.0 |
| 1877 | * |
| 1878 | * @param string $key Sanitized key. |
| 1879 | * @param string $raw_key The key prior to sanitization. |
| 1880 | */ |
| 1881 | return apply_filters( 'sanitize_key', $key, $raw_key ); |
| 1882 | } |
| 1883 | |
| 1884 | /** |
| 1885 | * Sanitizes a title, or returns a fallback title. |
| 1886 | * |
| 1887 | * Specifically, HTML and PHP tags are stripped. Further actions can be added |
| 1888 | * via the plugin API. If $title is empty and $fallback_title is set, the latter |
| 1889 | * will be used. |
| 1890 | * |