更新SQL表

Question

I want to update a table on a specific row need some advice on my php statement

I use this statement to call the client's info

<?php
$host="localhost"; // Host name 
$username="****"; // Mysql username 
$password="****"; // Mysql password 
$db_name="****"; // Database name 
$tbl_name="members"; // 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
$id=$_GET['id'];

// Retrieve data from database 
$sql="SELECT * FROM $tbl_name WHERE member_msisdn='$query'";
$result=mysql_query($sql);
$rows=mysql_fetch_array($result);
?>

This works fine echoíng the information I need and able to alter it.

<form name="form1" method="post" action="control_clientupdated.php">

This referes to my action php script

Problem I need assistance with is how do i notify my action script to use the same id I ran the query on to update that row.

// 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 $tbl_name SET member_name='$member_name',     
member_surname='$member_surname', member_msisdn='$member_msisdn', cid='$cid',    
cofficenr='$cofficenr', cfax='$cfax',  e2mobile='$e2mobile' WHERE member_msisdn='$query'";
$result=mysql_query($sql);

I have placed the WHERE statement on the end of the update

Let me just state it shows done, but it did not update the table at all

Answer 1

Firstly you need to store your ID into a hidden form element in your form.

<form method="post" action="control_clientupdated.php">
    <input type="hidden" name="member_msisdn" value="<?=$query?>" />
    ...
</form>

This will allow you to passthrough the value from your first php script.

Then in your control_clientupdated.php you need to use $_POST to recover your value.

// Store the $_POST value for my query ID
$query = $_POST['member_msisdn'] ;

// 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 $tbl_name SET member_name='$member_name',     
member_surname='$member_surname', member_msisdn='$member_msisdn', cid='$cid',    
cofficenr='$cofficenr', cfax='$cfax',  e2mobile='$e2mobile' WHERE member_msisdn='$query'";
$result=mysql_query($sql);

This should be what you need - note that you cannot use $_GET to retrieve the variable passed by the form, as you are sending it with the method="post" attribute, you must use $_POST instead of $_GET