Question

I am trying to run the following script (unsuccessfully):

$variables = $db->query("SELECT * FROM table1 WHERE Session_ID = '$sess1'");

while($row = $variables->fetch()) {

//FETCH DATA
$id= $row["ID"];
$info = $db->query("SELECT * FROM table2 WHERE ID = $id");

while($row2 = $info->fetch()) { 
    $name = $row2["FNAME"]." ".$row2["LNAME"]; }
    $phone = $row2["PHONE"];
}

//SEND CUSTOMER EMAIL
require("../email/email.php");                      
}

this returns the error: Fatal error: Call to a member function fetch() on a non-object in…

While I am able to “solve” the problem, it is ugly. Essentially I have to make several calls ahead of the one I’m trying below (which in theory should work).

Any ideas?

Answer 1

As far as I can tell, you have to fetch all results from a resultset before you can issue a new query. If you’re using MySQL, you can circumvent that by calling $db->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY,true);, but I would advice against it, as it makes your code less portable, and on of the major plusses of PDO, database-abstraction, is lost.