檢查，如果一個或多個$ _GET設置

生病再試一次：/

IM建立一個博客頁面，

我想讓它顯示通過，海報或產品類別或一個月或一年，或一個職位組合。但只有當$ _GET在url中。如果不是，他們只是去blogs.php我希望它只顯示最近的12個職位。不，我有自己的工作和自己的海報工作。

這裏是我的代碼，到目前爲止，編輯出來後一點

    <?php 


$category = mysql_real_escape_string($_GET['Category']); 
$Poster = mysql_real_escape_string($_GET['Poster']); 
$Month = mysql_real_escape_string($_GET['Month']); 
$Year = mysql_real_escape_string($_GET['Year']); 


$sql = "SELECT * FROM blog, blog_poster, blog_category WHERE blog.category = '$category' 
AND blog_poster.pid = blog.posterid 
AND blog_category.ID = blog.category 

OR posterid = '$Poster' 
AND blog_poster.pid = blog.posterid 
AND blog_category.ID = blog.category 
ORDER BY timestamp DESC LIMIT 5"; 

$result = mysql_query($sql) or print ("Can't select entries from table.<br />" . $sql . "<br />" . mysql_error()); 
while($row = mysql_fetch_array($result)) { 
    $date = date("D M d Y", $row['timestamp']); 

$title = stripslashes($row['title']); 
$entry = stripslashes($row['entry']); 
$id = $row['id']; 
$entry =substr($entry, 0, 250); 


?> 

      <div class="ribbon"> 
        <div class="wrapAround"></div> 
        <div class="tab"> 
         <span class="blogDate"><?php echo $date; ?></span> 
         <span class="blogPostInfo">Posted by <a href="#"><?php echo $row['name']; ?></a> <!--| <a href="#">0 Comments</a --></span> 
        </div> 
       </div> 
       <div class="blogPostSummary"> 
        <h1><span><b><?php echo $title; ?></b></span></h1> 
        <div class="blogPostImage"> 
         <a href='cs_blog/content.php?id=<?=$id?>'class="img"> 
         <img src="../images/content/blogs/cs_blog/date/headers/blog-post-01.JPG" width="556" height="133" alt="blog post image" /></a> 
        </div> 
        <p> 
         <?php echo $entry."..&nbsp;<br><a href='content.php?id=$id'>Read more...</a>"; ?> 
        </p> 
        <p></p> 
       </div> 



       <!-- End of Content --> 
       <?php }; ?>

本

來源

2012-03-02 Ben Stringer

'isset'有什麼問題？ – Rikesh 2012-03-02 11:45:33

isset看起來像是這裏的正確方法 – 2012-03-02 11:46:19

很難理解你想要達到的目標。你試過什麼了？向我們展示您的代碼 - 我們可能會指出錯誤。 – 2012-03-02 11:46:35

$conditions = array(); 
if(isset($_GET['Category'])) $conditions[] = "category='". mysql_real_escape_string($_GET['Category']) . "'"; 
if(isset($_GET['Poster'])) $conditions[] = "poster='". mysql_real_escape_string($_GET['Poster']) . "'"; 

if(!empty($conditions)) 
    $conditions = 'where ' . implode(' AND ', $conditions); 
echo 'select * from table ' . $conditions;

來源

2012-03-02 12:11:54 Alex

將嘗試這一個，謝謝:) – 2012-03-02 12:38:27

工作感謝隊友，只需要一個{關於if（！空和其他結尾謝謝隊友 – 2012-03-02 13:41:23

試試這個

$category='DefaultCategory'; 
$poster='DefaultPoster'; 
$month='defaultMonth'; 
$month='defaultYear'; 

if(isset($_GET['Category'])) 
{ 
    $category = mysql_real_escape_string($_GET['Category']); 
} 
if(isset($_GET['Poster'])) 
{ 
    $Poster = mysql_real_escape_string($_GET['Poster']); 
} 
if(isset($_GET['Month'])) 
{ 
    $Month = mysql_real_escape_string($_GET['Month']); 
} 
if(isset($_GET['Year'])) 
{ 
    $Year = mysql_real_escape_string($_GET['Year']); 
} 

$query="insert into sampleTable(category,poster,month,year) 
values ($Category,$Poster,$Month,$Year)";

或者如果您已經在表中的所有字段設置默認值設計那麼你只能插入提供的字段

來源

2012-03-02 11:51:19

檢查，如果一個或多個$ _GET設置

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