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我有一個MySQL數據庫查詢和顯示在index.php表中。我有一個名爲up.php的文件，它處理在index.php中的查詢輸出的每個表中點擊<a>。我需要一個變量，可以從查詢的每個單獨行中的字段中提取出來，以便單擊<a>時，它將變量傳遞給up.php文件以進行操作。現在變量剛好被寫入，並且等於查詢的最後一行的值，並且數據庫經常更新，所以我不能只爲每行設置一個，它必須是動態的。從數組/ MySQL查詢PHP提取和定義變量每行而不覆蓋
這裏是index.php文件
<?php
$sql = mysql_query("SELECT * FROM blogData ORDER BY id DESC");
//query for even numbered rows where mes_id = even
$sql2=mysql_query("SELECT * FROM messages WHERE mod(mes_id,2) = 0 ORDER BY mes_id DESC");
//query for odd numbered rows where mes_id = even
$sql3=mysql_query("SELECT * FROM messages WHERE mod(mes_id,2) = 1 ORDER BY mes_id DESC");
while(($row = mysql_fetch_array($sql))AND($row2 = mysql_fetch_array($sql2))AND($row3 = mysql_fetch_array($sql3))){
$id = $row['id'];
$title = $row['title'];
$content = $row['content'];
$category = $row['category'];
$podcast = $row['podcast'];
$datetime = $row['datetime'];
$message1=$row2['msg'];
//******* this is the variable from the query that needs to be held and not overwritten ********
$mes_id1=$row2['mes_id'];
$totalvotes1=$row2['totalvotes'];
$message2=$row3['msg'];
//******* this is the second variable from the query that needs to also be held and not overwritten *******
$mes_id2=$row3['mes_id'];
$totalvotes2=$row3['totalvotes'];
//attempting to implement this array...? not sure how to use it correctly...
$valuess[]=$row2['mes_id'];
//******* I was trying to use these session variables in up.php but they were being overwritten in the query ********
$_SESSION['message1'] = $row2['msg'];
$_SESSION['message2'] = $row3['msg'];
$_SESSION['mes_id1'] = $row2['mes_id'];
$_SESSION['mes_id2'] = $row3['mes_id'];
$_SESSION['totalvotes1'] = $row2['totalvotes'];
$_SESSION['totalvotes2'] = $row3['totalvotes'];
$_SESSION['valuess'] = $valuess[1];
?>
<?php
// variable used to display file name of $podcast without the extension
$noext = $podcast;
$echodub = rawurlencode($podcast);
// code to display $noext without the file extension
$info = pathinfo($noext);
$noext_name = basename($noext,'.'.$info['extension']);
?>
<!-- ********* echo php variables in html format, in a table with the class of "podcast" -->
<table class="podcast" border="1">
<tr>
<td class="title">
<?php echo $title; ?>
</td>
<td class="timeandcategory">
<?php echo $datetime; ?> <br>
<?php echo $category; ?>
<?php echo $_SESSION['mes_id1']; ?>
<?php echo $_SESSION['mes_id2']; ?>
<?php echo session_id(); ?>
</td>
</tr>
<tr>
<td class="content">
<?php echo $content; ?>
</td>
<td class="myfblike">
<span class='st_fblike_large' displayText='Facebook Like'></span><br>
<span class='st_facebook_large' displayText='Facebook'></span><br>
<span class='st_twitterfollow_large' displayText='Twitter Follow'></span><br>
<span class='st_pinterest_large' displayText='Pinterest'></span><br>
<span class='st_email_large' displayText='Email'></span><br>
<span class='st_sharethis_large' displayText='ShareThis'></span><br>
</td>
</tr>
<tr>
<td class="audio">
<!--echo the audio file -->
<ul class="playlist">
<li><a href="<?php echo"uploads/$podcast"; ?>"><?php echo"$noext_name"; ?></a></li>
</ul>
</td>
<td>
<!-- ********** this is the cell in the table where the veriables need to be held and sent to up.php ******** -->
<div id="main">
<div id="left">
<span class='up'><a href="up.php" class="" id="<?php echo $valuess[1]; ?>" name="up"><img src="up.png" alt="Down" /></a></span><br />
<?php echo $_SESSION['totalvotes1'] ?><br />
</div>
<div id="message">
<?php echo $_SESSION['message1'] ?>
</div>
<div class="clearfix"></div>
</div>
//********the down.php file is the same as the up.php file... just with opposite variables... im not concerned with this yet until i get the variables to display correctly in up.php
<div id="main">
<div id="left">
<br />
<?php echo $_SESSION['totalvotes2'] ?><br />
<span class='down'><a href="down.php" class="" id="<?php echo $_SESSION['mes_id2']; ?>" name="down"><img src="down.png" alt="Down" /></a></span>
</div>
<div id="message">
<?php echo $_SESSION['message2'] ?>
</div>
<div class="clearfix"></div>
</div>
</td>
</tr>
</table>
<br>
<?php
}
?>
這裏是up.php文件
up.php
<?php
session_start();
include("config.php");
$message1 = $_SESSION['message1'];
$message2 = $_SESSION['message2'];
$mes_id1 = $_SESSION['mes_id1'];
$mes_id2 = $_SESSION['mes_id2'];
$totalvotes1 = $_SESSION['totalvotes1'];
$totalvotes2 = $_SESSION['totalvotes2'];
$ip=$_SERVER['REMOTE_ADDR'];
$ip_sql=mysql_query("select ip_add from Voting_IP where mes_id_fk='$mes_id1' and ip_add='$ip'");
$count=mysql_num_rows($ip_sql);
$ip_sql2=mysql_query("select ip_add from Voting_IP where mes_id_fk='$mes_id2' and ip_add='$ip'");
$count2=mysql_num_rows($ip_sql2);
//********* testing if these variables are being passed.....
echo $mes_id1;
echo $mes_id2;
$valuess[0] = $_SESSION['valuess'];
echo $valuess[0];
//********
// if the user has already voted, execute script
if($count==0 && $count2!=0)
{
$sql = "update Messages set totalvotes=totalvotes+1 where mes_id='$mes_id1'";
mysql_query($sql);
$sql_in = "insert into Voting_IP (mes_id_fk,ip_add) values ('$mes_id1','$ip')";
mysql_query($sql_in);
$sql = "update Messages set totalvotes=totalvotes-1 where mes_id='$mes_id2'";
mysql_query($sql);
$sql_in = "DELETE FROM Voting_IP WHERE mes_id_fk='$mes_id2'";
mysql_query($sql_in);
// if the user has not voted, execute script
}
else if($count==0 && count2==0)
{
$sql = "update Messages set totalvotes=totalvotes+1 where mes_id='$mes_id1'";
mysql_query($sql);
$sql_in = "insert into Voting_IP (mes_id_fk,ip_add) values ('$mes_id1','$ip')";
mysql_query($sql_in);
echo $mes_id1;
echo $mes_id2;
}
?>
[**請不要在新代碼中使用'mysql_ *'函數**]（http://bit.ly/phpmsql）。他們不再保留[並正式棄用（https://wiki.php.net/rfc/mysql_deprecation）。看到[**紅框**]（http://j.mp/Te9zIL）？學習[*準備的語句*]（http://j.mp/T9hLWi），並使用[PDO]（http://php.net/pdo）或[MySQLi]（http://php.net/ mysqli） - [這篇文章]（http://j.mp/QEx8IB）將幫助你決定哪個。如果你選擇PDO，[這裏是一個很好的教程]（http://j.mp/PoWehJ）。 – j0k 2013-02-16 08:08:59