Re: Re: optimilize web page loading

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? :) 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. greets, Zoltán Németh > > > > > >> > >> > >> -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. :-) > > -Shawn >