使用XPath和php进行搜索

Question

目前我有一个索引页面，它使用simpleXML显示来自XML页面的值。而一个打印到另一个页面的搜索功能，我想要做的是刷新首页，以便在点击按钮时仅显示搜索结果。

索引页。

<?php 
    $action = "searchFunctionDescription.php"; 
?> 
    <form name="search" method="get" action=<?php echo "\"$action"?>"> 
    <input name="txtSearch" type="text" id="txtSearch" size="30"/> 
    <input type="submit" value="Search" /> 
    <?php 
     // load the xml file into a simplexml instance variable 
     $holiday = simplexml_load_file('holidays.xml'); 

     // draw a table and column headers 
     echo "<table border=\"1\">"; 

     // iterate through the item nodes displaying the contents 
     foreach ($holiday->channel->item as $holiday) { 
      echo "<tr><td><a href=\"{$holiday->link}\">{$holiday->title}</a>" . "<br />" . 
      "{$holiday->pubDate}" . "<br />" . 
      "{$holiday->description}</td>" . "<br />" . 
      "</tr>"; 
     } 
     echo "</table>"; 
    ?> 

然后我有我的searchProcessDescription.php页

<?php 
    // create an instance 
    $holidayDoc = simplexml_load_file('holidays.xml');  

    // Passes txtSearch to current script from searchFormDescription.php 
    $txtSearch = $_GET['txtSearch']; 

    // Informs user of what they have searched 
    echo "Showing Results for <strong>$txtSearch</strong>"; 

    // set the query using the description 
    if (!is_null($txtSearch)) { 
     $qry = "//channel/item[description[contains(text(),\"$txtSearch\")]]"; 
    } 
    else { 
    // blank search entered so all holidays are shown. 
     $qry = "/channel/'ALL'"; 
    } 

    // execute the xpath query 
    $holidays = $holidayDoc->xpath($qry); 

    // now loop through all holidays and entered results into table 
    echo "<table border=\"0\">\n"; 
    foreach ($holidays as $holiday) 
    { 
     echo "<tr>\n"; 
     echo "<td><a href=\"{$holiday->link}\">{$holiday->title}</a></td>"; 
     echo "<td>{$holiday->description}</td>"; 
     echo "<td>{$holiday->pubDate}</td>"; 
     echo "<td><input type=\"checkbox\" name=\"saveCB\" value=\"3\"/></td>"; 
     echo "</tr>\n"; 
    } 
     echo "</table>\n"; 
?> 

有一个简单的方法来此过程中添加到索引页面，该页面被点击搜索按钮时刷新？

感谢

Answer 1

是的，你可以另一个变量添加到您的形式来检查，你必须显示的功能，这样的事情：

<?php 
// create an instance 
$holidayDoc = simplexml_load_file('holidays.xml'); 

$resultTable = ""; 

switch (@$_POST['action']){ 
    case "Search": 

     $txtSearch = $_POST['txtSearch']; 
    $resultTable .= "Showing Results for <strong>$txtSearch</strong><br />"; 

     // set the query using the description 
     if (!is_null($txtSearch)) { 
      $qry = "//channel/item[description[contains(text(),\"$txtSearch\")]]"; 
     } 
     else { 
     // blank search entered so all holidays are shown. 
      $qry = "/channel/'ALL'"; 
     } 

     // execute the xpath query 
     $holidays = $holidayDoc->xpath($qry); 

     // now loop through all holidays and entered results into table 
     $resultTable .= "<table border=\"0\">\n"; 

     foreach ($holidays as $holiday) 
     { 
      $resultTable .= "<tr>\n"; 
      $resultTable .= "<td><a href=\"{$holiday->link}\">{$holiday->title}</a></td>"; 
      $resultTable .= "<td>{$holiday->description}</td>"; 
      $resultTable .= "<td>{$holiday->pubDate}</td>"; 
      $resultTable .= "<td><input type=\"checkbox\" name=\"saveCB\" value=\"3\"/></td>"; 
      $resultTable .= "</tr>\n"; 
     } 
     $resultTable .= "</table>\n"; 

     break; 

    default: // this means the home page, as is, without the query into XML file 
     $resultTable .= "<table border=\"1\">";// draw a table and column headers 

     // iterate through the item nodes displaying the contents 
     foreach ($holidayDoc->channel->item as $holiday) { 
      $resultTable .= "<tr><td><a href=\"{$holiday->link}\">{$holiday->title}</a>" . "<br />" . 
      "{$holiday->pubDate}" . "<br />" . 
      "{$holiday->description}</td>" . "<br />" . 
      "</tr>"; 
     } 
     $resultTable .= "</table>"; 
    break; 
    } 

?> 

<form name="search" method="POST" action=#"> 
    <input name="txtSearch" type="text" id="txtSearch" size="30"/> 
    <input type="submit" value="Search" name="action" /> 
</form> 

<?=$resultTable ?> <!-- finally show the result table --> 

我希望这有用！