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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 |
|---|---|
| 2051 | $t = wp_get_mime_types(); |
| 2052 | |
| 2053 | unset( $t['swf'], $t['exe'] ); |
| 2054 | if ( function_exists( 'current_user_can' ) ) |
| 2055 | $unfiltered = $user ? user_can( $user, 'unfiltered_html' ) : current_user_can( 'unfiltered_html' ); |
| 2056 | |
| 2057 | if ( empty( $unfiltered ) ) |
| 2058 | unset( $t['htm|html'] ); |
| 2059 | |
| 2060 | return apply_filters( 'upload_mimes', $t, $user ); |
| 2061 | } |
| 2062 | |
| 2063 | /** |
| 2064 | * Display "Are You Sure" message to confirm the action being taken. |
| 2065 | * |
| 2066 | * If the action has the nonce explain message, then it will be displayed along |
| 2067 | * with the "Are you sure?" message. |
| 2068 | * |
| 2069 | * @package WordPress |