Php maxdb select db () function

Write your php code

(no version information, might be only in CVS)

maxdb_select_db

(no version information, might be only in CVS)

maxdb->select_db -- Selects the default database for database queries

Syntax

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 world 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();
?>

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 world 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);
?>

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 [] <...>

Php maxdb select db Function syntax tag

maxdb select db php code on this is provided for your study purpose, it will guide you to know how create and design a website using php. use it to practice and train your self online

Php maxdb select db syntax tutorial

php tutorial guide and code design are for easy learning and programming. The code practice section provided at the top is for practising of this syntax. Use the code section up to practice your php programming online. Learning php is very easy, all you need is to use the examples on this site and practice them to perfect your skills.