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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 |
---|---|
933 | * error reporting will be completely skipped. |
934 | * |
935 | * @since 4.9.0 |
936 | * |
937 | * @param mixed $move_new_file If null (default) move the file after the upload. |
938 | * @param string[] $file An array of data for a single file. |
939 | * @param string $new_file Filename of the newly-uploaded file. |
940 | * @param string $type Mime type of the newly-uploaded file. |
941 | */ |
942 | $move_new_file = apply_filters( 'pre_move_uploaded_file', null, $file, $new_file, $type ); |
943 |
|
944 | if ( null === $move_new_file ) { |
945 | if ( 'wp_handle_upload' === $action ) { |
946 | $move_new_file = @move_uploaded_file( $file['tmp_name'], $new_file ); |
947 | } else { |
948 | // Use copy and unlink because rename breaks streams. |
949 | // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged |
950 | $move_new_file = @copy( $file['tmp_name'], $new_file ); |
951 | unlink( $file['tmp_name'] ); |