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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 |
|---|---|
| 2174 | |
| 2175 | /** |
| 2176 | * Filters a sanitized key string. |
| 2177 | * |
| 2178 | * @since 3.0.0 |
| 2179 | * |
| 2180 | * @param string $sanitized_key Sanitized key. |
| 2181 | * @param string $key The key prior to sanitization. |
| 2182 | */ |
| 2183 | return apply_filters( 'sanitize_key', $sanitized_key, $key ); |
| 2184 | } |
| 2185 | |
| 2186 | /** |
| 2187 | * Sanitizes a string into a slug, which can be used in URLs or HTML attributes. |
| 2188 | * |
| 2189 | * By default, converts accent characters to ASCII characters and further |
| 2190 | * limits the output to alphanumeric characters, underscore (_) and dash (-) |
| 2191 | * through the {@see 'sanitize_title'} filter. |
| 2192 | * |