All Fields Template: Compare Template

<?php
/**
 * Gravity Wiz // Gravity Forms // All Fields Template: Compare Template
 * https://gravitywiz.com/gravity-forms-all-fields-template/
 *
 * Adds a "compare" template to the All Fields Template snippet that displays each field's label,
 * previous value, and current value in a side-by-side CSS grid layout.
 *
 * Instructions:
 *
 * 1. Ensure you have All Fields Template installed.
 *    https://gravitywiz.com/gravity-forms-all-fields-template/
 *
 * 2. Install this snippet. No code configuration required.
 *    https://gravitywiz.com/documentation/managing-snippets/#where-do-i-put-snippets
 *
 * 3. Enable the `compare` template on any `{all_fields}` merge tag. Be sure to include the `updated` modifier as well.
 *    `{all_fields:updated,template[compare]}`
 */
add_filter( 'gwaft_template_output', function( $content, $slug, $name, $data, $suffixes ) {
	if ( ! in_array( 'compare', $suffixes ) ) {
		return $content;
	}
	$original_entry = gw_all_fields_template()->get_original_entry();
	ob_start();
	?>
	<table style="width: 100%; border-collapse: collapse; margin-top: 1rem;">
		<thead>
			<tr>
				<th style="text-align: left; border-bottom: 2px solid #ddd; padding: 0.5rem;">Field</th>
				<th style="text-align: left; border-bottom: 2px solid #ddd; padding: 0.5rem;">Previous Value</th>
				<th style="text-align: left; border-bottom: 2px solid #ddd; padding: 0.5rem;">Current Value</th>
			</tr>
		</thead>
		<tbody>
		<?php foreach ( $data['items'] as $item ):
			$raw_field_value = GFFormsModel::get_lead_field_value( $original_entry, $item['field'] );
			$previous_value  = GFCommon::get_lead_field_display( $item['field'], $raw_field_value, rgar( $original_entry, 'currency' ), true, 'html', 'email' );
			?>
			<tr>
				<td style="padding: 0.5rem; border-bottom: 1px solid #ddd;"><?php echo esc_html( $item['label'] ); ?></td>
				<td style="padding: 0.5rem; border-bottom: 1px solid #ddd;"><?php echo $previous_value; ?></td>
				<td style="padding: 0.5rem; border-bottom: 1px solid #ddd;"><?php echo $item['value']; ?></td>
			</tr>
		<?php endforeach; ?>
		</tbody>
	</table>
	<?php
	return ob_get_clean();
}, 10, 5 );