Values from this php vrsn: 5.6.40 // cycling through date
	
# date_default_timezone_set(date_default_timezone_get());

time zone un set: Cycles = 5000  /  Time = 20.517665863037
time zone un set: Cycles = 500  /   Time = 1.9783658981323
time zone un set: Cycles = 50  /    Time = 0.1280689239502

		time zone un set: Cycles = 50  /  Time = 0.00010395050048828
with ... 
date _default _timezone _set( date _default_ timezone_ get() ) ;

time zone is set: Cycles = 5000  /   Time = 0.093980073928833
time zone is set: Cycles = 500  /    Time = 0.0086138248443604
time zone is set: Cycles = 50  /     Time = 0.0012309551239014

		time zone is set: Cycles = 50  /  Time = 5.6028366088867E-5