Resource Types
Thread
pthreads
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.

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

Resource Types
Thread
pthreads
PHP Manual