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Check database exists!

Posted on 2006-06-20
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Last Modified: 2012-08-13
How can I use php to check an database name is exists or not!?

Thanks!
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Question by:tunhien
3 Comments
 
LVL 36

Expert Comment

by:Zyloch
ID: 16944258
Hi tunhien,

A rather simple way would be to try and select it. If it is not there, it will not be selectable. For instance:

<?php

//...other code

$db_exists = @mysql_select_db("DB_NAME", $db_conn);

if ($db_exists === false)
{
    echo("DB does not exist.");
}

Regards,
Ted
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LVL 5

Accepted Solution

by:
aminerd earned 125 total points
ID: 16945029
Or..

$result = mysql_query("SHOW DATABASES LIKE 'DB_NAME'", $link);
$exists = ($result && mysql_fetch_assoc($result);

echo 'Database '.($exists ? 'does' : 'does not').' exist.';
0
 
LVL 49

Expert Comment

by:Roonaan
ID: 16945373
Alternatively change aminerds $exists line to:

$exists = ($result && mysql_num_rows($result) >0);

-r-
0

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