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POUpdate data from one table in a database to another table in a different database not working
 

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  1. POUpdate data from one table in a database to another table in a different database not working
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    <p>I'm trying to create a script that updates data from a table in one database to a table in another database. I'm self-made and my abilities are very limited. I'm sure there's a better way of doing this but it might be out of my reach. Anyway, this is how I'm trying to do it.</p> <p>The first document selects the data from the table I want to get the information from. It contains a link that allows me to select the row I want to copy. This link basically creates a form with the information I want to copy into the second database. The idea is that when I press submit, it sends the information to the second database and it updates the fields. </p> <p>The problem I'm having is that, even though it says it has executed the query successfully, it simply doesn't update the second database.</p> <p>Can anyone see why this is not working?</p> <p>These are the scripts I'm using:</p> <p>TEST-DISPLAY.php</p> <pre><code>&lt;?php $host="localhost"; // Host name $username="username"; // Mysql username $password="password"; // Mysql password $db_name="db1"; // Database name $tbl_name="table1"; // Table name // Connect to server and select database. mysql_connect("$host", "$username", "$password")or die("cannot connect"); mysql_select_db("$db_name")or die("cannot select DB"); $sql="SELECT * FROM $tbl_name"; $result=mysql_query($sql); ?&gt; &lt;table width="400" border="0" cellspacing="1" cellpadding="0"&gt; &lt;tr&gt; &lt;td&gt; &lt;table width="400" border="1" cellspacing="0" cellpadding="3"&gt; &lt;tr&gt; &lt;td colspan="4"&gt;&lt;strong&gt;List data from mysql &lt;/strong&gt; &lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td align="center"&gt;&lt;strong&gt;Uid&lt;/strong&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;strong&gt;User Name&lt;/strong&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;strong&gt;Password&lt;/strong&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;strong&gt;Email&lt;/strong&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;strong&gt;Update&lt;/strong&gt;&lt;/td&gt; &lt;/tr&gt; &lt;?php while($rows=mysql_fetch_array($result)){ ?&gt; &lt;tr&gt; &lt;td&gt;&lt;? echo $rows['uid']; ?&gt;&lt;/td&gt; &lt;td&gt;&lt;? echo $rows['user']; ?&gt;&lt;/td&gt; &lt;td&gt;&lt;? echo $rows['password']; ?&gt;&lt;/td&gt; &lt;td&gt;&lt;? echo $rows['email']; ?&gt;&lt;/td&gt; // link to update.php and send value of id &lt;td align="center"&gt;&lt;a href="http://soundsurgery.co.uk/main/TEST5/TEST-EDIT.php?uid=&lt;? echo $rows['uid']; ?&gt;"&gt;update&lt;/a&gt;&lt;/td&gt; &lt;/tr&gt; &lt;?php } ?&gt; &lt;/table&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;?php mysql_close(); ?&gt; </code></pre> <p>TEST-EDIT.php</p> <pre><code>&lt;?php $host="localhost"; // Host name $username="username"; // Mysql username $password="password"; // Mysql password $db_name="db1"; // Database name $tbl_name="table1"; // Table name // Connect to server and select database. mysql_connect("$host", "$username", "$password")or die("cannot connect"); mysql_select_db("$db_name")or die("cannot select DB"); // get value of id that sent from address bar $uid=$_GET['uid']; // Retrieve data from database $sql="SELECT * FROM $tbl_name WHERE uid='$uid'"; $result=mysql_query($sql); $rows=mysql_fetch_array($result); ?&gt; &lt;table width="400" border="0" cellspacing="1" cellpadding="0"&gt; &lt;tr&gt; &lt;form name="form1" method="post" action="TEST-EXEC.php"&gt; &lt;td&gt; &lt;table width="100%" border="0" cellspacing="1" cellpadding="0"&gt; &lt;tr&gt; &lt;td&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3"&gt;&lt;strong&gt;Update data in mysql&lt;/strong&gt; &lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td align="center"&gt;&amp;nbsp;&lt;/td&gt; &lt;td align="center"&gt;&amp;nbsp;&lt;/td&gt; &lt;td align="center"&gt;&amp;nbsp;&lt;/td&gt; &lt;td align="center"&gt;&amp;nbsp;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td align="center"&gt;&amp;nbsp;&lt;/td&gt; &lt;td align="center"&gt;&lt;strong&gt;Uid&lt;/strong&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;strong&gt;User Name&lt;/strong&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;strong&gt;Password&lt;/strong&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;strong&gt;Email&lt;/strong&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;&amp;nbsp;&lt;/td&gt; &lt;td align="center"&gt; &lt;input name="uid" type="text" id="uid" value="&lt;? echo $rows['uid']; ?&gt;"&gt; &lt;/td&gt; &lt;td align="center"&gt; &lt;input name="user" type="text" id="user" value="&lt;? echo $rows['user']; ?&gt;"&gt; &lt;/td&gt; &lt;td align="center"&gt; &lt;input name="password" type="text" id="password" value="&lt;? echo $rows['password']; ?&gt;" size="15"&gt; &lt;/td&gt; &lt;td&gt; &lt;input name="email" type="text" id="email" value="&lt;? echo $rows['email']; ?&gt;" size="15"&gt; &lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;&amp;nbsp;&lt;/td&gt; &lt;td&gt; &lt;input name="uid" type="hidden" id="uid" value="&lt;? echo $rows['uid']; ?&gt;"&gt; &lt;/td&gt; &lt;td align="center"&gt; &lt;input type="submit" name="Submit" value="Submit"&gt; &lt;/td&gt; &lt;td&gt;&amp;nbsp;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;/td&gt; &lt;/form&gt; &lt;/tr&gt; &lt;/table&gt; &lt;?php // close connection mysql_close(); ?&gt; </code></pre> <p>TEST-EXEC.php</p> <pre><code>&lt;?php $host="localhost"; // Host name $username="username"; // Mysql username $password="password"; // Mysql password $db_name="db2"; // Database name $tbl_name="table2"; // Table name // Connect to server and select database. mysql_connect("$host", "$username", "$password")or die("cannot connect"); mysql_select_db("$db_name")or die("cannot select DB"); // update data in mysql database $sql="UPDATE $tbl_name SET uname='$user', password='$password', email='$email' WHERE uid='$uid'"; $result=mysql_query($sql); // if successfully updated. if($result){ echo "Successful"; echo "&lt;BR&gt;"; echo "&lt;a href='TEST-DISPLAY2.php'&gt;View result&lt;/a&gt;"; } else { echo "ERROR"; } ?&gt;&lt;!doctype html&gt; &lt;html&gt; &lt;head&gt; &lt;meta charset="UTF-8"&gt; &lt;title&gt;Untitled Document&lt;/title&gt; &lt;/head&gt; &lt;body&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>TEST-DISPLAY2.php is the same as TEST-DISPLAY.php with the difference that it displays results for the second table.</p>
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    1. USEugenie
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      1. POUpdate data from one table in a database to another table in a different database not working
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      1. VTDownMod
    1. COPlease do not use `mysql_query` in new applications. It's a deprecated interface that's being removed from PHP and it's dangerous when mis-used like you have. You're have some **severe** [SQL injection bugs](http://bobby-tables.com/) here because you're not [properly escaping your values](http://bobby-tables.com/php). A modern replacement like [PDO is not hard to learn](http://net.tutsplus.com/tutorials/php/why-you-should-be-using-phps-pdo-for-database-access/) and will ensure your database code works in future versions of PHP.
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      1. UStadman
 

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