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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 |
---|---|
1235 |
|
1236 | /** |
1237 | * Filter a sanitized key string. |
1238 | * |
1239 | * @since 3.0.0 |
1240 | * |
1241 | * @param string $key Sanitized key. |
1242 | * @param string $raw_key The key prior to sanitization. |
1243 | */ |
1244 | return apply_filters( 'sanitize_key', $key, $raw_key ); |
1245 | } |
1246 |
|
1247 | /** |
1248 | * Sanitizes a title, or returns a fallback title. |
1249 | * |
1250 | * Specifically, HTML and PHP tags are stripped. Further actions can be added |
1251 | * via the plugin API. If $title is empty and $fallback_title is set, the latter |
1252 | * will be used. |
1253 | * |