php - 使用完整或部分在表中搜索

Question

我遇到一个小问题，我尝试搜索产品，而用户可以选择单击完整搜索或部分搜索。问题是，当用户单击完整搜索并输入某些内容时，整个表格都会打印出来，而产品的单词则不会(我想打印产品而不是整个表格)并且使用部分搜索，它只是打印结果它找不到匹配项。下面是到目前为止我的代码:

// DB configuration //
if (!isset($_POST["searchtype"])) {
echo "<form method='POST'>";
echo "Search for product:<br>";
# using html5 input type search 
echo "<input type='text' name='searchtext' size='15' placeholder='search' results='5' autosave='saved-searches'>";
echo "<br><br>";
echo "Full search";
echo"<input type='radio' value='FULL' checked name='searchtype'><br>";
echo "Partial search ";
echo "<input type='radio' name='searchtype' value='PARTIAL'>";
echo "<br><br>";
echo "<input type='submit' value='Search' name='submit'>";
echo "</form>";


  }
  else {
$searchtext = $_POST["searchtext"]; # Retrieve from the form
$searchtype = $_POST["searchtype"]; # Retrieve from the form
$searchtext_san = sanitize_form_text($searchtext); # Prevents SQL injections!


            try{
    if($DBH == null)
        $DBH = new PDO($dsn, $dbuser, $dbpass);


      $sql = "select name, price, details from products where name='$searchtext_san'";


    if ($searchtype == "FULL"){

        $sql .= " = :searchtext_san";       
        $STH = $DBH->prepare($sql);     
        $STH->execute(array(':searchtext_san' => $searchtext_san));

    }

    if ($searchtype == "PARTIAL"){

        $sql .= " LIKE ':searchtext_san'";
        $STH = $DBH->prepare($sql);
        $STH->execute(array(':searchtext_san' => '%'.$searchtext_san.'%'));
    }


    $STH->setFetchMode(PDO::FETCH_ASSOC);

    $total = $STH->rowCount();
    if ($total == 0){
        echo "Sorry, no matches found!";
    }
    if ($total > 0){
        while ($row = $STH->fetch()){

            echo "{$row["name"]} {$row["price"]} {$row["details"]}<br>";
        }
    } 

    $DBH = null;
     }
    catch (PDOException $e){
    echo '<b>PDOException: </b>',$e->getMessage();
    die();
    }
    }

    function sanitize_form_text($t)
    {
    $t = strip_tags($t);
     $t = ereg_replace("[^A-Za-z0-9@._-]", "", $t);
      return $t;
     }

     ?>

Answer 1

尝试使用全文搜索

SELECT * FROM articles WHERE MATCH (title,body)
    AGAINST ('+MySQL -YourSQL' IN BOOLEAN MODE); 

Full text Search description

对于部分搜索，您可以喜欢

SELECT name FROM products WHERE name  RLIKE '[yourtext]'