maxdb_select_db
(PECL)
maxdb_select_db
(no version information, might be only in CVS)
maxdb->select_db -- Selects the default database for database queries
Description
bool
maxdb_select_db ( resource link, string dbname )
The maxdb_select_db() function selects the default
database (specified by the dbname parameter) to be
used when performing queries against the database connection
represented by the link parameter.
Note:
This function should only be used to change the default database for the connection.
You can select the default database with 4th parameter in maxdb_connect().
Return values
Returns TRUE on success or FALSE on failure.
Example
Example 1. Object oriented style
<?php $maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");
/* check connection */ if (maxdb_connect_errno()) { printf("Connect failed: %s\n", maxdb_connect_error()); exit(); }
/* return name of current default database */ if ($result = $maxdb->query("SELECT SERVERDB FROM USERS WHERE USERNAME='MONA'")) { $row = $result->fetch_row(); printf("Default database is %s.\n", $row[0]); $result->close(); }
/* change db to non existing db */ $maxdb->select_db("XXXXXXXX");
/* return name of current default database */ if ($result = $maxdb->query("SELECT SERVERDB FROM USERS WHERE USERNAME='MONA'")) { $row = $result->fetch_row(); printf("Default database is %s.\n", $row[0]); $result->close(); }
$maxdb->close(); ?>
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Example 2. Procedural style
<?php $link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");
/* check connection */ if (maxdb_connect_errno()) { printf("Connect failed: %s\n", maxdb_connect_error()); exit(); }
/* return name of current default database */ if ($result = maxdb_query($link, "SELECT SERVERDB FROM USERS WHERE USERNAME='MONA'")) { $row = maxdb_fetch_row($result); printf("Default database is %s.\n", $row[0]); maxdb_free_result($result); }
/* change db to non existing db */ maxdb_select_db($link, "XXXXXXXX");
/* return name of current default database */ if ($result = maxdb_query($link, "SELECT SERVERDB FROM USERS WHERE USERNAME='MONA'")) { $row = maxdb_fetch_row($result); printf("Default database is %s.\n", $row[0]); maxdb_free_result($result); }
maxdb_close($link); ?>
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The above examples would produce the following output:
Default database is <...>.
Warning: maxdb_select_db(): -10709 Connection failed (RTE:database not running) <...>
Warning: maxdb_query(): -10821 Session not connected [] <...>
Warning: maxdb_close(): -10821 Session not connected [] <...> |