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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 |
|---|---|
| 949 | /** |
| 950 | * Filters the maximum allowed upload size for import files. |
| 951 | * |
| 952 | * @since 2.3.0 |
| 953 | * |
| 954 | * @see wp_max_upload_size() |
| 955 | * |
| 956 | * @param int $max_upload_size Allowed upload size. Default 1 MB. |
| 957 | */ |
| 958 | $bytes = apply_filters( 'import_upload_size_limit', wp_max_upload_size() ); |
| 959 | $size = size_format( $bytes ); |
| 960 | $upload_dir = wp_upload_dir(); |
| 961 | if ( ! empty( $upload_dir['error'] ) ) : |
| 962 | ?> |
| 963 | <div class="error"><p><?php _e( 'Before you can upload your import file, you will need to fix the following error:' ); ?></p> |
| 964 | <p><strong><?php echo $upload_dir['error']; ?></strong></p></div> |
| 965 | <?php |
| 966 | else : |
| 967 | ?> |