Testimonial Rotator Fix 201406

gistfile1.php

<?php
/*
Plugin Name: Testimonial Rotator Fix 201406
Description: Add/remove testimonials to/from a rotator. For the plugin Testimonial Rotator, https://wordpress.org/plugins/testimonial-rotator/ See: https://wordpress.org/support/topic/fix-for-missing-testimonials-in-widget-rotator-after-203 Needs more testing, use at your own risk.
Version: 0.1
Author: kitchin
Plugin URI: https://gist.github.com/kitchin/6f534d0bc58cce1e107e
Date: 2014/06, for Wordpress 3.9.1+, Testimonial Rotator 2.0.3
License: Needs more testing, use at your own risk.
*/


add_action('admin_enqueue_scripts', 'testimonial_rotator_fix201406_action_admin_enqueue_scripts');
/*
*/
function testimonial_rotator_fix201406_action_admin_enqueue_scripts() {
	wp_enqueue_script( 'jquery' );
}


add_action('admin_menu', 'testimonial_rotator_fix201406_action_add_menu_items');
/*
*/
function testimonial_rotator_fix201406_action_add_menu_items() {
	add_menu_page(
		'Testimonial Rotator Fix',				// page_title
		'Testimonial Rotator Fix',				// menu_title
		'edit_pages',							// capability
		'testimonial_rotator_fix201406',		// menu_slug
		'testimonial_rotator_fix201406_render'  // function
	);
}


/*
*/
function testimonial_rotator_fix201406_render() {
	global $wpdb;
	$title=			$GLOBALS['title'];
	// $plugin_page=	$GLOBALS['plugin_page'];
?>

<div class="wrap">
	<h2><?php echo $title; ?></h2>
	<div style="margin: 1em">
	<p><i>Note:</i> You can remove this plugin when done.</p>

<?php
	$rot_id= '';
	if ( isset( $_POST['_testimonial_rotator_fix201406_nonce'] ) ) {
		$maybe_id= (int)$_POST['rot_id'];
		$action= preg_replace('/\W/', '', $_POST['action']);
		check_admin_referer( $action, '_testimonial_rotator_fix201406_nonce' );
		if ( $maybe_id ) {
			if ( $rot= get_post( $maybe_id ) and $rot->post_type == 'testimonial_rotator' ) {
				$rot_id = $maybe_id;
				print "<p>Rotator found: #$rot_id, '$rot->post_title'</p>\n";
			}
		}
		if (! $rot_id) {
			print( "<p>ERROR: Not found: #$maybe_id</p>\n" );
		}
	}

	$query= "SELECT `ID`, `post_title` FROM `$wpdb->posts` WHERE `post_type`='testimonial_rotator' ORDER BY `post_title`";
	if ( $rots= $wpdb->get_results($query) ) {
?>

		<form method="post">
		<?php wp_nonce_field( 'select_rot', '_testimonial_rotator_fix201406_nonce' ); ?>
		<input type="hidden" name="action" value="select_rot">
		<p>Rotator ID: <select name="rot_id">

<?php
		foreach ($rots as $rot) {
			$sel= selected($rot->ID, $rot_id, false);
			print "<option name='rot_id' value='$rot->ID' $sel>#$rot->ID, $rot->post_title</option>\n";
		}
?>

		</select>
		<?php submit_button('Select Rotator', 'primary', 'selectrot', false); ?></p>
		</form>

<?php
		if ( $rot_id ) {
			$query= "SELECT `ID` FROM `$wpdb->posts` WHERE `post_type`='testimonial' ORDER BY `post_title`";
			if ( $ids= $wpdb->get_col($query) ) {
?>

				<form method="post">
				<?php wp_nonce_field( 'process_rot', '_testimonial_rotator_fix201406_nonce' ); ?>
				<input type="hidden" name="action" value="process_rot">
				<input type="hidden" name="rot_id" value="<?php echo $rot_id; ?>">
				<p>Found <?php echo count($ids); ?> testimonial(s) total</p>
				<table border="1" cellspacing="0" cellpadding="5">
				<tr><th>#</th>
				<th>In Rotator #<?php echo $rot_id; ?></th>
				<th>All Rotators</th>
				<th>Testimonial</th></tr>

<?php
				foreach ($ids as $i=>$id) {
					$testi= get_post($id);
					$rots= get_post_meta($id, '_rotator_id', true);
					$rots= array_filter( explode('|', (string) $rots), 'strlen' );  // from the plugin
					$inrot_pos = array_search( $rot_id, $rots );
					$inrot = $inrot_pos !== false;

					$note = '';
					if ( $action=='process_rot' ) {
						$note= ' No change';
						if ( empty($_POST["inrot_shown_$id"] ) ) {
							$note= ' Error, data has changed since post.';
						} elseif ( empty($_POST["inrot_$id"] ) ) {
							if ( $inrot ) {
								array_splice( $rots, $inrot_pos, 1 );
								if ( $rots ) {
									update_post_meta( $id, '_rotator_id', join( '|', $rots ) );
								} else {
									delete_post_meta( $id, '_rotator_id' );
								}
								$inrot= false;
								$note= ' Removed';
							}
						} elseif ( ! $inrot ) {
							$rots[]= $rot_id;
							update_post_meta( $id, '_rotator_id', join( '|', $rots ) );
							$inrot= true;
							$note= ' Added';
						}
					}

					$rots_st= join(', ', $rots) or $rots_st= '<i>none</i>';
					$check= checked($inrot, true, false);
					printf(
						"<tr>
						<td>%s</td>
						<td>%s</td>
						<td>%s</td>
						<td>%s</td>
						</tr>\n",
						$i + 1,
						"<input type='hidden' name='inrot_shown_$id' value='yes'><input type='checkbox' name='inrot_$id' value='yes' $check> $note",
						$rots_st,
						"#$id, $testi->post_title"
					);
				}
?>

				<tr><td>&nbsp;</td>
				<td colspan="3"><input type="checkbox" value="yes" id="inrot-all"> All/none</td></tr>
				</table>
				<script>
					jQuery(document).ready(function($){
						$('#inrot-all').change(function(){
							$(this).closest('form').find('input:checkbox').prop('checked', this.checked);
						});
					});
				</script>
				<?php submit_button('Update'); ?>
				</form>

<?php
			} else {
				print "<p>No results</p>\n";
			}
		}
	} else {
		print "<p>No rotators</p>\n";
	}
?>

	</div>
</div>

<?php
}

See: https://wordpress.org/support/topic/fix-for-missing-testimonials-in-widget-rotator-after-203
I only tested it with one rotator. It's experimental!