Re: Re: optimilize web page loading

2008. 03. 28, péntek keltezéssel 09.19-kor Zoltán Németh ezt írta: > 2008. 03. 27, csütörtök keltezéssel 10.21-kor Shawn McKenzie ezt írta: > > Jason Pruim wrote: > > > > > > On Mar 27, 2008, at 11:05 AM, Shawn McKenzie wrote: > > >> Al wrote: > > >>> Good point. I usually do use the single quotes, just happened to key > > >>> doubles for the email. > > >>> > > >>> Actually, it's good idea for all variable assignments. > > >>> > > >>> Philip Thompson wrote: > > >>>> On Mar 26, 2008, at 6:28 PM, Al wrote: > > >>>>> Depends on the server and it's load. I've strung together > > >>>>> some > > >>>>> rather large html strings and they aways take far less time than the > > >>>>> transient time on the internet. I used to use OB extensively until > > >>>>> one day I took the time to measure the difference. I don't > > >>>>> recall the > > >>>>> numbers; but, I do recall it was not worth the slight extra trouble > > >>>>> to use OB. > > >>>>> > > >>>>> Now, I simple assemble by html strings with $report .= > > >>>>> "foo"; And > > >>>>> then echo $report at the end. It also makes the code very easy to > > >>>>> read and follow. > > >>>> > > >>>> You might as well take it a step further. Change the above to: > > >>>> > > >>>> $report .= 'foo'; > > >>>> > > >>>> This way for literal strings, the PHP parser doesn't have to > > >>>> evaluate > > >>>> this string to determine if anything needs to be translated (e.g., > > >>>> $report .= "I like to $foo"). A minimal speedup, but > > >>>> nonetheless... > > >>>> > > >>>> ~Philip > > >>>> > > >>>> > > >>>>> Andrew Ballard wrote: > > >>>>>> On Wed, Mar 26, 2008 at 1:18 PM, Al <news@ridersite.org> > > >>>>>> wrote: > > >>>>>>> You are really asking an HTML question, if you think about > > >>>>>>> it. > > >>>>>>> > > >>>>>>> At the PHP level, either use output buffering or assemble all > > >>>>>>> your > > >>>>>>> html string as a variable and > > >>>>>>> then echo it. The goal is to compress the string into the > > >>>>>>> minimum > > >>>>>>> number of packets. > > >>>>>> Yes, but do so smartly. Excessive string concatenation can slow > > >>>>>> things > > >>>>>> down as well. On most pages you probably won't notice much > > >>>>>> difference, > > >>>>>> but I have seen instances where the difference was painfully > > >>>>>> obvious. > > >>>>>> Andrew > > >> > > >> Yes and if your script takes .00000000000000000000000000000002 seconds > > >> to run using double quotes it will only take > > >> .000000000000000000000000000000019 seconds with single (depending upon > > >> how many quotes you have of course) :-) > > > > > > I'm coming in late to this thread so sorry if I missed this :) > > > > > > How much of a difference would it make if you have something like this: > > > echo "$foo bar bar bar bar $foo $foo"; verses: echo $foo . "bar bar > > > bar > > > bar" . $foo $foo; ?In other words... You have a large application which > > > is most likely to be faster? :) > > > > > > > > >> > > >> > > >> -Shawn > > >> > > >> -- > > >> PHP General Mailing List (http://www.php.net/) > > >> To unsubscribe, visit: > > >> http://www.php.net/unsub.php > > >> > > >> > > > > > > -- > > > > > > Jason Pruim > > > Raoset Inc. > > > Technology Manager > > > MQC Specialist > > > 3251 132nd ave > > > Holland, MI, 49424-9337 > > > www.raoset.com > > > japruim@raoset.com > > > > > > > > > > > I would assume your 2 examples to be the same because the point is that > > the PHP interpreter must parse for vars to substitute when it encounters > > double-quotes whether there are any vars in it or not. With > > single-quotes the interpreter does not have to worry about it. > > Regardless, the speed diff is probably negligible, hence my flame > > inviting post. :-) > > ehh my answer is meant to be here: nope. it parses both, since you may have escaped characters within > single quotes too. so the difference only comes in when you actually > have a variable in the string. sorry its morning ;) greets, Zoltán Németh > > -Shawn > > > >