error_reporting(0) not working

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PHP

MySQL

Hello,

I am currently developing in production environment as there is no test environment for development.

The problem is whenever there is any sql error, it displays the error with database, table name on the browser to the user, which i think isn't right.

I have checked the phpinfo() and it says -

error_reporting 22527
display_errors off


I have also tried adding error_reporting(0) with no success.

<?php 

error_reporting(0);
require_once('connection.php');


mysql_select_db($db, $test);

$query =  "Select * from testtable";
$result = mysql_query($query, $test) or die(mysql_error());
$num_rows = mysql_num_rows($result);


?>

and user get the error  -

"Table 'db.testtable' doesn't exist" 

Any ideas?

Thanks