Description:
------------
In the php extension moduld the function PHP_MSHUTDOWN_FUNCTION was called by every process of apache while PHP_MINIT_FUNCTION only was called one time by the parent process of apache.

It cause the whold module only was  initialized one times but was finalized several times.

Reproduce code:
---------------
PHP_MINIT_FUNCTION(zraidapi)
{
	/* If you have INI entries, uncomment these lines 
	REGISTER_INI_ENTRIES();
	*/
	ZA_DBG_Init( "" );
      if( FALSE == zRaidApiInit() ) // 0 - SILENT_MODE, 1 - BUZZER_MODE
      {
	       zend_error( E_ERROR, "zRaidApiInit() failed!!" );
	       return FAILURE;
      }
      STORE_KEY(PHP_ZRAIDAPI, 1, 0, 0, 18);
	return SUCCESS;
}

PHP_MSHUTDOWN_FUNCTION(zraidapi)
{
	/* uncomment this line if you have INI entries
	UNREGISTER_INI_ENTRIES();
	*/
    	zRaidApiShutdown();
    	ZA_DBG_Shutdown();
	return SUCCESS;
}

Expected result:
----------------
I want to get some explaination about when the PHP_MINIT_FUNCTION and PHP_MSHUTDOWN_FUNCTION were called , and whether it is a bug of php or apache2.