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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 |
|---|---|
| 1936 | /** |
| 1937 | * Filters a sanitized title string. |
| 1938 | * |
| 1939 | * @since 1.2.0 |
| 1940 | * |
| 1941 | * @param string $title Sanitized title. |
| 1942 | * @param string $raw_title The title prior to sanitization. |
| 1943 | * @param string $context The context for which the title is being sanitized. |
| 1944 | */ |
| 1945 | $title = apply_filters( 'sanitize_title', $title, $raw_title, $context ); |
| 1946 | |
| 1947 | if ( '' === $title || false === $title ) |
| 1948 | $title = $fallback_title; |
| 1949 | |
| 1950 | return $title; |
| 1951 | } |
| 1952 | |
| 1953 | /** |
| 1954 | * Sanitizes a title with the 'query' context. |