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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 |
|---|---|
| 971 | * @type string $name The original name of the file on the client machine. |
| 972 | * @type string $type The mime type of the file, if the browser provided this information. |
| 973 | * @type string $tmp_name The temporary filename of the file in which the uploaded file was stored on the server. |
| 974 | * @type int $size The size, in bytes, of the uploaded file. |
| 975 | * @type int $error The error code associated with this file upload. |
| 976 | * } |
| 977 | * @param string $new_file Filename of the newly-uploaded file. |
| 978 | * @param string $type Mime type of the newly-uploaded file. |
| 979 | */ |
| 980 | $move_new_file = apply_filters( 'pre_move_uploaded_file', null, $file, $new_file, $type ); |
| 981 | |
| 982 | if ( null === $move_new_file ) { |
| 983 | if ( 'wp_handle_upload' === $action ) { |
| 984 | $move_new_file = @move_uploaded_file( $file['tmp_name'], $new_file ); |
| 985 | } else { |
| 986 | // Use copy and unlink because rename breaks streams. |
| 987 | // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged |
| 988 | $move_new_file = @copy( $file['tmp_name'], $new_file ); |
| 989 | unlink( $file['tmp_name'] ); |