Proper Quoting

[bpat1434]

I was wondering if someone could enlighten me on this subject.

I have read that using the single quotes (') the PHP parser will interpret it as a literal string; while, using double quotes (") the PHP parser will go through and parse all variables contained inside it.

Is this true? If so, does it really speed up page creation/rendering?

If not, is there a benefit to it?

~Brett

[Shrike]

Yes it is true. It's worth doing when looping through structures but overall the speed difference won't be too great.

[Weedpacket]

Note that the slowdown caused by parsing for variables only applies if there actually are variables to be parsed; the difference is identified during lexical scanning and hence a (negligible) once-per-string-literal cost at load time (even less with a bytecode compiler/cache). Double-quoted strings also match a wider range of escape sequences, again the work is done during lexing.