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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 |
---|---|
972 | * @param array $upload { |
973 | * Array of upload data. |
974 | * |
975 | * @type string $file Filename of the newly-uploaded file. |
976 | * @type string $url URL of the newly-uploaded file. |
977 | * @type string $type Mime type of the newly-uploaded file. |
978 | * } |
979 | * @param string $context The type of upload action. Values include 'upload' or 'sideload'. |
980 | */ |
981 | return apply_filters( |
982 | 'wp_handle_upload', |
983 | array( |
984 | 'file' => $new_file, |
985 | 'url' => $url, |
986 | 'type' => $type, |
987 | ), |
988 | 'wp_handle_sideload' === $action ? 'sideload' : 'upload' |
989 | ); |
990 | } |