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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 |
|---|---|
| 821 | |
| 822 | /** |
| 823 | * Outputs the form used by the importers to accept the data to be imported |
| 824 | * |
| 825 | * @since 2.0.0 |
| 826 | * |
| 827 | * @param string $action The action attribute for the form. |
| 828 | */ |
| 829 | function wp_import_upload_form( $action ) { |
| 830 | $bytes = apply_filters( 'import_upload_size_limit', wp_max_upload_size() ); |
| 831 | $size = wp_convert_bytes_to_hr( $bytes ); |
| 832 | $upload_dir = wp_upload_dir(); |
| 833 | if ( ! empty( $upload_dir['error'] ) ) : |
| 834 | ?><div class="error"><p><?php _e('Before you can upload your import file, you will need to fix the following error:'); ?></p> |
| 835 | <p><strong><?php echo $upload_dir['error']; ?></strong></p></div><?php |
| 836 | else : |
| 837 | ?> |
| 838 | <form enctype="multipart/form-data" id="import-upload-form" method="post" action="<?php echo esc_attr(wp_nonce_url($action, 'import-upload')); ?>"> |
| 839 | <p> |