How to change the upload and post maximum size in LAMP Enviroment

In many situations, PHP developer need to change the upload and post maximum size in LAMP Enviroment.

There are more than one way to extend the limitation.

1) modify php.ini

• upload_max_filesize = 20M
• post_max_size = 20M

There are obvious advantages/disadvantages about this way.

a) It is a  system-wide setting            b) It will not be effect until Apache is restarted

2) add and modify .htaccess file

a) Add content into the file

php_value upload_max_filesize 15M
php_value post_max_size 15M

b) change the privilege of the file

chmod 777 .htaccess

There are obvious advantages/disadvantages about this way.

a) It is not a system-wide setting, the .htaccess under DIR only take effection under DIR

b) It will  be effect immediately, don’t need to restart Apache.