Resource Types
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SPL
PHP Manual

# Predefined Constants

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.

Warning

SPL uses class constants since PHP 5.1. Prior releases use global constants in the form `RIT_LEAVES_ONLY`.

`RecursiveIteratorIterator::LEAVES_ONLY` (integer)
`RecursiveIteratorIterator::SELF_FIRST` (integer)
`RecursiveIteratorIterator::CHILD_FIRST` (integer)
`CachingIterator::CALL_TOSTRING` (integer)
`CachingIterator::CATCH_GET_CHILD` (integer)

Resource Types
SPL Functions
SPL
PHP Manual