PHP 5.2 support?

I want to test Couchbase in my web application.
But I failed to install PHP API on my server.
The error message is shown below:

/usr/local/bin/pecl install couchbase

Did not download optional dependencies: pecl/igbinary, use --alldeps to download automatically
pecl/couchbase requires PHP (version >= 5.3.0), installed version is 5.2.14
pecl/couchbase can optionally use package "pecl/igbinary"
No valid packages found
install failed

Is there any way to use Couchbase with PHP 5.2 ?

Thanks in advance!

Sungsoo Kim

The PHP SDK requires PHP 5.3 - see

PHP 5.2 is pretty old - it was released back in 2007 and declared it end-of-life in 2011 - see

drigby is correct there in the comments. There are some features that preclude PHP 5.2 support.