Why do we need PHP extensions on PECL?

Question

PHP

PHP has extensions such as php-apc and php-memcache. They can be installed from the regular repository or from PEAR/PECL . What is the point of using PEAR/PECL?? how much more stable is memcache from pecl and how much does it consume less resources?? (relevant for ububntu 12.04 14.04 and PHP 5.3 and 5.5)

Answer 1

What is the point of using PEAR/PECL??

PECL is a repository of native extensions written in C.
They are usually used when something cannot be implemented in pure PHP, such as function or operator overloading.
packagist - PHP dependency repository, work with it via composer .
This is a must have for any project.
PEAR is dead, composer / packagist is used instead .

Answer 2

If the repository has an up-to-date version at the moment, install it and don't worry. But, alas, this is not always the case. In this case, you can install from PECL.

Answer 3

pecl - for native extensions, pear - for php extensions