How to update PHP 5.1.0 to PHP 5.3.0?

Keep thinking......
Everything possible....

Download the package PHP-5.3.0.tar.bz package.

# tar -xjvf php-5.3.0.tar.bz2

#ls

php-5.3.0.tar.bz2 php-5.3.0.

#cd php-5.3.0

#./configure
After running the ./configure command i am getting the below eror message

configure: error: xml2-config not found. Please check your libxml2 installation.

solution for this error:

#yum install libxml2

run the configure command.

it will take the time to configure the package.
#make
#make install

after running the above commands.

your browser will not show the new version. for show the new version have to do the below steps.



How to switch to a different PHP version?
#cd /var/www

SiteGround has implemented a unique server setup that allows each customer to choose which version of PHP to use for his / her account. What is more, the customer can even use different PHP versions for different directories in one and the same hosting account. The PHP versions currently supported are: PHP 4.4 PHP 5.0, PHP 5.1, PHP 5.2, PHP 5.3, PHP 6.0 and a special secure version of PHP 5.2 with Suhosin patch.

In order to change the PHP version for your account, follow these steps. Go to cPanel, File Manager and choose "Web Root (public_html/www)". There create a new file (or edit the existing one) called .htaccess and add the following line:

To switch to PHP 4.4:

AddHandler application/x-httpd-php4 .php .php4 .php3

To switch to PHP 5.0:

AddHandler application/x-httpd-php5 .php .php5 .php4 .php3

To switch to PHP 5.1:

AddHandler application/x-httpd-php51 .php .php5 .php4 .php3

To switch to PHP 5.2:

AddHandler application/x-httpd-php52 .php .php5 .php4 .php3

To switch to PHP 5.3:

AddHandler application/x-httpd-php53 .php .php5 .php4 .php3

To switch to PHP 6.0:

AddHandler application/x-httpd-php6 .php .php5 .php4 .php3

To switch to the secure PHP 5.2 with Suhosin patch:

AddHandler application/x-httpd-php52s .php .php5 .php4 .php3

This setting will apply recursively to all of the subdirectories. In case you'd like to have a different version of PHP in a subdirectory, create a new .htaccess file in it with the directive for the desired PHP version in it.

Njoy it..........