PHP 按空格拆分搜索栏关键字

Question

好的，让我尽可能具体....我想改变我的搜索栏的行为方式。现在字符串必须与 MySQL 查询完全匹配！！！否则它不会显示我的产品。

这是我得到的： 搜索“case iphone”

searchitems.php?tosearch=case+iphone&Search=Search

现在搜索“iphone case”

searchitems.php?tosearch=iphone+case&Search=Search

现在基于查询的工作方式...如果我手动输入网址...它可以按我的意愿工作：

searchitems.php?tosearch=%iphone%&%case%&Search=Search

那么我该如何从

更改 URL

searchitems.php?tosearch=case+iphone&Search=Search

到

searchitems.php?tosearch=%iphone%&%case%&Search=Search

这是我目前的代码：

在 index.php 中搜索表单

<form method="GET" action="searchitems.php">
    <input size="50" type="text" name="tosearch" value="Search" name="keyword" id="keyword" title="keyword" onfocus="clearText(this)" onblur="clearText(this)" class="txt_field">
    <input type="submit" name="Search" value="Search" alt="Search" id="searchbutton" title="Search" class="sub_btn">
</form>

searchitems.php（抱歉，如果它没有正确标记，只是复制和粘贴）

<?php
include('core/header2.php');
include ('core/connectdb.php');
if(isset($_GET['tosearch'])) {
$tosearch=$_GET['tosearch'];
$tosearch=urldecode($tosearch);
$tosearch = preg_replace('!\s+!', ' ', trim($tosearch));
$search_terms = explode(' ',$tosearch);
$search_terms[] = $tosearch;
$search_terms=array_unique($search_terms);
$query = "select * from products where ";
$query_fields = Array();
$sql = "SHOW COLUMNS FROM products"; 
$columnlist = $connect->query($sql); 
while($arr = $columnlist->fetch_assoc()){ 
  extract($arr);
  $query_fields[] = $Field . " LIKE ('%". $tosearch . "%')";
}
$query .= implode(" OR ", $query_fields);
                $results = mysqli_query($connect, $query) or die(mysql_error());
                $rows = $results->num_rows;
                if ($rows > 0) {
                    $cols = 5;
                    $counter = 1;
                    $nbsp = $cols - ($rows % $cols);
                    echo '<div id="content" class="float_r">';
                    echo "<table border=\"0\">";
                    while ($row = mysqli_fetch_array($results, MYSQLI_ASSOC)) {
                        if(($counter % $cols) == 1) {    // Check if it's new row
                            echo '<tr align="center">'; 
                        }
                        extract($row);
                        echo '<td  valign="top" style="padding-right:15px;">';
                        echo "<a href=itemdetails.php?itemcode=$item_code>";
                        echo '<img src=' . $imagename . ' style="max-width:120px;max-height:140px;
                        width:auto;height:auto;"></img><br/>';
                        echo $item_name .'<br/>';
                        echo "</a>";
                        echo '<div class="product_price">$'. $price .'</div>';
                        echo "<form method=\"POST\" action=\"cart.php?action=add&icode=$item_code&iname=$item_name&iprice=$price&ilocation=$location\">";
                        echo "<input type=\"submit\" name=\"addtocart\" value=\"Add To Cart\"></form>";
                        echo "</td>";
                        if(($counter % $cols) == 0 ){
                            echo "</tr>";
                        }
                        $counter++;
                    }
                    if($nbsp > 0) { // Add unused column in last row
                        for ($i = 0; $i < $nbsp; $i++)  { 
                            echo '<td>&nbsp;</td>';     
                        }
                        echo '</tr>';
                    }

                                }
}
echo '</table></div><div class="cleaner"></div>';
include('core/footer.php');
?>

Answer 1

好吧，兄弟，你这样做的方法很糟糕。但是对于学习来说，这很好。对于+签名问题，可以使用phpurldecode，例如：

<?php 
$tosearch = 'a+b';
echo urldecode($tosearch); 

它有自己的优点/缺点，但在高层次上它会为你工作，如果你愿意，你可以深入研究它。