Re: mysql_select_db problem

From: Date: Tue, 04 Jun 2002 02:52:21 +0000
Subject: Re: mysql_select_db problem
References: 1  Groups: php.general 
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> The following code always returns the "Couldn't select > database" error. > <? > $db_name="mydb"; > $table_name="my_table"; > $connection = @mysql_connect("localhost", "user", "password") or > die > ("Couldn't connect."); > $db = @mysql_select_db($db_name) or die ("Couldn't select database"); > ?> Add some useful debugging: if (!$conn = mysql_connect($host, $user, $pass)) { print "Cannot connect to DB : " . mysql_error(); exit; } if (!@mysql_select_db($dbname)) { print "Cannot select DB ($dbname) : " . mysql_error(); exit; } The key here is mysql_error(). You could also use this function within your 'or die()' but personally I frown upon using 'or' like this, it's rather limiting. In the above, we are checking if the function returns false and if it does we do stuff, like print mysql_error() and exit the script. Do as you wish. On a related note, if you removed the '@' from your code, odds are it'd shout an error too. '@' can be useful for supressing errors so we can implement our own form of error management/trapping, like in the above. Regards, Philip Olson

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