php man page for shm_has_var

SHM_HAS_VAR(3)								 1							    SHM_HAS_VAR(3)

shm_has_var - Check whether a specific entry exists

SYNOPSIS
       bool shm_has_var (resource  $shm_identifier, int  $variable_key)

DESCRIPTION
	Checks whether a specific key exists inside a shared memory segment.

PARAMETERS
	      o $shm_identifier
		- Shared memory segment, obtained from shm_attach(3).

	      o $variable_key
		- The variable key.

RETURN VALUES
	Returns TRUE if the entry exists, otherwise FALSE

SEE ALSO
       shm_get_var(3), shm_put_var(3).

PHP Documentation Group 													    SHM_HAS_VAR(3)