pthreads
PHP Manual

Vordefinierte Konstanten

Folgende Konstanten werden von dieser Erweiterung definiert und stehen nur zur Verfügung, wenn die Erweiterung entweder statisch in PHP kompiliert oder dynamisch zur Laufzeit geladen wurde.

The following constants are for selective inheritance:

PTHREADS_INHERIT_ALL (integer)
The default inheritance mask used when starting Threads and Workers
PTHREADS_INHERIT_INI (integer)
Determines wether the ini entries are inherited by the new context
PTHREADS_INHERIT_CONSTANTS (integer)
Determines wether the constants are inherited by the new context
PTHREADS_INHERIT_CLASSES (integer)
Determines wether the class table is inherited by the new context
PTHREADS_INHERIT_FUNCTIONS (integer)
Determines wether the function table is inherited by the new context
PTHREADS_INHERIT_INCLUDES (integer)
Determines wether the included_files table is inherit by the new context
PTHREADS_INHERIT_NONE (integer)
Nothing will be inherited by the new context

pthreads
PHP Manual