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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 |
|---|---|
| 1904 | |
| 1905 | /** |
| 1906 | * Filters a sanitized key string. |
| 1907 | * |
| 1908 | * @since 3.0.0 |
| 1909 | * |
| 1910 | * @param string $key Sanitized key. |
| 1911 | * @param string $raw_key The key prior to sanitization. |
| 1912 | */ |
| 1913 | return apply_filters( 'sanitize_key', $key, $raw_key ); |
| 1914 | } |
| 1915 | |
| 1916 | /** |
| 1917 | * Sanitizes a title, or returns a fallback title. |
| 1918 | * |
| 1919 | * Specifically, HTML and PHP tags are stripped. Further actions can be added |
| 1920 | * via the plugin API. If $title is empty and $fallback_title is set, the latter |
| 1921 | * will be used. |
| 1922 | * |