Integration Solution of php and mysql5.5

Php and mysql5.5 integration php. ini: extension_dir & quot; C: phpenvphp-5.2ext & quot; extensionphp_mysql.dllextensionphp_mysqli.dllextensionphp_bz2.dllextensionphp_gd2.dllphp File: & lt ;? Php $ l integration of php and mysql5.5
Php. ini:
Extension_dir = "C:/PHP/php-5.2/ext"
Extension = php_mysql.dll
Extension = php_mysqli.dll
Extension = php_bz2.dll
Extension = php_gd2.dll

Php file:
$ Link = mysql_connect ('localhost', 'root', 'root ');
If (! $ Link ){
Die ('could not connect: '. mysql_error ());
}
Echo 'ccted successfully ';
Mysql_close ($ link );
?>


Apache error. log:
PHP Fatal error: Call to undefined function mysql_connect () in C :\\ phpenv \ Apache2.2 \ htdocs \ testmysql. php on line 2

What is going on?

------ Solution --------------------
Phpinfo ();
Check whether the php. ini path is a modified file.