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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 |
|---|---|
| 2128 | |
| 2129 | /** |
| 2130 | * Filters a sanitized key string. |
| 2131 | * |
| 2132 | * @since 3.0.0 |
| 2133 | * |
| 2134 | * @param string $key Sanitized key. |
| 2135 | * @param string $raw_key The key prior to sanitization. |
| 2136 | */ |
| 2137 | return apply_filters( 'sanitize_key', $key, $raw_key ); |
| 2138 | } |
| 2139 | |
| 2140 | /** |
| 2141 | * Sanitizes a title, or returns a fallback title. |
| 2142 | * |
| 2143 | * Specifically, HTML and PHP tags are stripped. Further actions can be added |
| 2144 | * via the plugin API. If $title is empty and $fallback_title is set, the latter |
| 2145 | * will be used. |
| 2146 | * |