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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 |
|---|---|
| 1958 | <?php |
| 1959 | |
| 1960 | /** |
| 1961 | * Fires on the post upload UI screen. |
| 1962 | * |
| 1963 | * Legacy (pre-3.5.0) media workflow hook. |
| 1964 | * |
| 1965 | * @since 2.6.0 |
| 1966 | */ |
| 1967 | do_action( 'post-upload-ui' ); |
| 1968 | } |
| 1969 | |
| 1970 | /** |
| 1971 | * Outputs the legacy media upload form for a given media type. |
| 1972 | * |
| 1973 | * @since 2.5.0 |
| 1974 | * |
| 1975 | * @param string $type |
| 1976 | * @param object $errors |