This question already has an answer here:
I got this message
Warning: mysql_query() expects parameter 1 to be string, object given in
In regard to this line:
$QSelPro = mysql_query($con,"SELECT * FROM products");
what's wrong with this????
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From the PHP manual for mysql_query():
mixed mysql_query ( string $query [, resource $link_identifier = NULL ] )
Thus, change to
$QSelPro = mysql_query("SELECT * FROM products", $con);
Also from the same page:
Warning
This extension is deprecated as of PHP 5.5.0, and will be removed in the future...
In other words, consider not using mysql_*. It is deprecated. Instead use mysqli_* or pdo