On Tue, 6 Oct 2009 12:15:54 -0400, tedd.sperling@xxxxxxxxx (tedd) wrote: >At 3:56 PM +0200 10/6/09, Andrea Giammarchi wrote: >> > Does these behaves exactly? >>> for($i=0; $i<10; ++$i) >>> for($i=0; $i<10; $i++) >> >>different benchmarks showed ++$i is usually faster than $i++ > >"Faster" is a relative term that is becoming more meaningless each year. > >Considering that "speed" is increasing and "memory" prices are >dropping exponentially, both of those are becoming less and less >important in design considerations (my opinion). > >The speeds of the Crays of yesteryear we are now holding in our hands >as cell phones. The memory we are buying today is literally fractions >of a cent of the tens of thousands of dollars we spent some 20 years >ago. My memory is a bit vague, but I think my first hard disk had 10 MB, and cost about $2000-- about $0.20 a kilobyte. Now you can buy a 1 TB hard disk for less than $100 -- less than $0.10 a gigabyte. >I venture to claim the time it took me to write this email (and for >you to read it) was longer than the total time saved between using >++$i vs $i++ for all the php scripts in the world over the remaining >life span of PHP. > >Interesting "food for thought", huh? When I started computing I could get five runs a week if I used the little "local" computer (with 32K of 24 bit words, and costing $500,000), or three runs a week if I used the big computer in Canberra (which had four times as much memory and cost $2 million). -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
