WordPress at a glance
function is not described

upload_space_setting() WP 3.0.0

Displays the site upload space quota setting form on the Edit Site Settings screen.

No Hooks.

Return

Nothing (null).

Usage

upload_space_setting( $id );
$id(int) (required)
The ID of the site to display the setting for.

Code of upload space setting: wp-admin/includes/ms.php VER 5.0.3

<?php
function upload_space_setting( $id ) {
	switch_to_blog( $id );
	$quota = get_option( 'blog_upload_space' );
	restore_current_blog();

	if ( !$quota )
		$quota = '';

	?>
	<tr>
		<th><label for="blog-upload-space-number"><?php _e( 'Site Upload Space Quota' ); ?></label></th>
		<td>
			<input type="number" step="1" min="0" style="width: 100px" name="option[blog_upload_space]" id="blog-upload-space-number" aria-describedby="blog-upload-space-desc" value="<?php echo $quota; ?>" />
			<span id="blog-upload-space-desc"><span class="screen-reader-text"><?php _e( 'Size in megabytes' ); ?></span> <?php _e( 'MB (Leave blank for network default)' ); ?></span>
		</td>
	</tr>
	<?php
}