(PHP 4, PHP 5)
shm_remove_var — Removes a variable from shared memory
$shm_identifier
   , int $variable_key
   )
   Removes a variable with a given variable_key
   and frees the occupied memory.
  
shm_identifierThe shared memory identifier as returned by shm_attach()
variable_keyThe variable key.
   Returns TRUE on success or FALSE on failure.