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PHP Interview Questions
What are the differences between mysqli_connect and mysqli_pconnect?
mysqli_pconnect() function is used for making a persistent connection with the database that does not terminate when the script ends.
 
mysqli_connect() function searches any existing persistence connection first and if no persistence connection exists, then it will create a new database connection and terminate the connection at the end of the script.
 
Example :
$DBconnection = mysqli_connect("localhost","username","password","dbname");
// Check for valid connection
if (mysqli_connect_errno())
{
echo "Unable to connect with MySQL: " . mysqli_connect_error();
}
 
mysqli_pconnect() function is depreciated in the new version of PHP, but you can create a persistence connection using mysqli_connect with the prefix p.