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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 |
|---|---|
| 866 | /** |
| 867 | * Filters the maximum allowed upload size for import files. |
| 868 | * |
| 869 | * @since 2.3.0 |
| 870 | * |
| 871 | * @see wp_max_upload_size() |
| 872 | * |
| 873 | * @param int $max_upload_size Allowed upload size. Default 1 MB. |
| 874 | */ |
| 875 | $bytes = apply_filters( 'import_upload_size_limit', wp_max_upload_size() ); |
| 876 | $size = size_format( $bytes ); |
| 877 | $upload_dir = wp_upload_dir(); |
| 878 | if ( ! empty( $upload_dir['error'] ) ) : |
| 879 | ?><div class="error"><p><?php _e('Before you can upload your import file, you will need to fix the following error:'); ?></p> |
| 880 | <p><strong><?php echo $upload_dir['error']; ?></strong></p></div><?php |
| 881 | else : |
| 882 | ?> |
| 883 | <form enctype="multipart/form-data" id="import-upload-form" method="post" class="wp-upload-form" action="<?php echo esc_url( wp_nonce_url( $action, 'import-upload' ) ); ?>"> |
| 884 | <p> |