Note: This manual is provided for your convenience only - this is not the official source and may not be 100% up to date.
CLV. Standard PHP Library (SPL) Functions
SPL is a collection of interfaces and classes that are meant to solve standard problems.
This extension is available and compiled by default in PHP 5.
The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.