PHP mysqli_select_db() Function

In this chapter you will learn:

  1. Definition for PHP mysqli_select_db() Function
  2. Syntax for PHP mysqli_select_db() Function
  3. Parameter for PHP mysqli_select_db() Function
  4. Return for PHP mysqli_select_db() Function
  5. Example - Change the default database

Definition

The mysqli_select_db() function changes the default database.

Syntax

PHP mysqli_select_db() Function has the following syntax.

mysqli_select_db(connection,dbname);

Parameter

ParameterIs RequiredDescription
connectionRequired.MySQL connection to use
dbnameRequired.Default database to use

Return

It returns TRUE on success. FALSE on failure.

Example

Change the default database


<?php//from jav  a  2 s . c o m
    $con=mysqli_connect("localhost","my_user","my_password","my_db");
    if (mysqli_connect_errno($con)){
      echo "Failed to connect to MySQL: " . mysqli_connect_error();
    }
    
    // Change database to "test"
    mysqli_select_db($con,"test");
    
    
    mysqli_close($con);
?>

Next chapter...

What you will learn in the next chapter:

  1. Definition for PHP mysqli_set_charset() Function
  2. Syntax for PHP mysqli_set_charset() Function
  3. Parameter for PHP mysqli_set_charset() Function
  4. Return for PHP mysqli_set_charset() Function
  5. Example - sets the default character set
Home » PHP Tutorial » PHP MySQLi Functions
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