zend-stdlib

Zend\Stdlib is a set of components that implements general purpose utility class for different scopes like:

array utilities functions;
json serializable interfaces;
general messaging systems;
string wrappers;
etc.

File issues at https://github.com/zendframework/zend-stdlib/issues
Documentation is at http://framework.zend.com/manual/current/en/index.html#zend-stdlib