问如果阅读每个单词，如何在While循环中删除重复项

EN

<?php
    $connect = mysqli_connect("localhost", "root", "", "dbProject");
    $output = '';
    if(isset($_POST["query"]))
    {
        $search = mysqli_real_escape_string($connect, $_POST["query"]);
        $SearchEach= explode(" ",$search);
        $output .= '<div class="table-responsive">
            <table class="table table bordered">
                            <tr>
                                <th>Book ID</th>
                                <th>Name</th>
                                <th>Author</th>
                                <th>Tags</th>
                                <th>Status</th>

                            </tr>';
        foreach($SearchEach as $value){
            $query = "
                SELECT * FROM tblProject 
                WHERE tyear >=YEAR(NOW())-30 AND (tags LIKE '%".$value."%'OR
                     tcname LIKE '%".$value."%' OR
                     author LIKE '%".$value."%' OR
                     status LIKE '%".$value."%')";
                $result = mysqli_query($connect, $query);
                while($row = mysqli_fetch_array($result))
                    {
                        $output .= '<tr>
                                <td>'.$row["tcno"].'</td>
                                <td>'.$row["tcname"].'</td>
                                <td>'.$row["Author"].'</td>
                                <td>'.$row["tags"].'</td>
                                <td>'.$row["status"].'</td>
                            </tr>';
                    }
            }
            echo $output;
    }
    ?>