for e.g. $var = 'world'; echo "hello $var"; vs echo 'hello '.$var; The first uses twice as many opcodes as compared to the second. The first is init a string and adding to it the first part(string) and then the second part (var); once completed it can echo it out. The second is simply two opcodes, a concatenate and an echo. Interpolation. Anthony Gentile On Sun, Dec 21, 2008 at 5:47 PM, German Geek <geek.de@xxxxxxxxx> wrote: > OK. I would think it uses more memory then, but doubt it would be slower. > Isnt the output buffered in memory anyway though in PHP? Surely the buffer > is bigger than 100 bytes (which is about the length of this string). So one > way or the other, the memory is used. > > Tim-Hinnerk Heuer > > http://www.ihostnz.com > > > On Mon, Dec 22, 2008 at 11:12 AM, Marc Steinert <lists@xxxxxxxxxx> wrote: > > > German Geek schrieb: > > > >> Why is the first method faster and uses less memory? > >> > >> > >> > > Because the concatenation operator first reassembles a new string, stores > > it in memory then passes this newly created string to the echo function, > if > > I'm not misstaken. > > > > > > -- > > http://bithub.net/ > > Synchronize and share your files over the web for free > > > > >
