如何从Mysql中选择逗号分隔变量

Question

I Have a MySql Database Structure and values samples as shown below:

sno     firstname      status
1        John            Active
2        Kelly           Inactive
3        Harri           Passive
4        Kris            Dormant

Now that I need to execute a Sql query from a PHP page, and the Status Values are from multiple checkbox which I have assigned as an array.

I have used Implode function for this array:

$status = $_POST['status'];    
$mstat= implode (',', $status);
$query="SELECT * FROM USER WHERE status IN '$mstat'";
$result=mysql_query($query);

while ($members = mysql_fetch_assoc($result))
        { 
        $fname= $members['firstname'];
        echo $fname;
        echo '</br>';
        }

The problem is that I'm not getting any results. What could be the problem. Or If anyone could suggest/Advice for an alternative.

When I echo $mstat; I get Active,Passive,Dormant (That is based on my checkbox selection)

Answer 1

status are strings. You need to wrap them with quotes . And IN needs () to wrap the string values. Try -

$mstat= "'" . implode ("','", $status) . "'";
$query="SELECT * FROM USER WHERE status IN ($mstat)";

Assuming $status contains some or all of those values showed in database in array format.

Answer 2

Here is 100% working answer

$mstat= implode ("','", $status);
$query="SELECT * FROM USER WHERE status IN ('$mstat')";

IN works like this IN ('Active','Passive','Dormat') so we have to add '' in all values which is done in implode function.

Answer 3

Change this line to:

$query="SELECT * FROM USER WHERE status IN ('$mstat')";

The Argument must in ()

!!! EACH word must in ' ' like: $query="SELECT * FROM USER WHERE status IN ('Active','Inactive')"

You can change it like:

if ($mstat) $query .= ' ({$db->quote($status}) ';