When to use single or double quote in php?

bill

New member
So for exmaple is it

fopen("file1.txt",r); or

fopen('file1.tx't,r); or

etc etc,

what is the difference between the ' and the "

would this be right,

echo ' <span class = "c1" > ' ;

idon't think it is actually .........

what are the rules for ' and "??

thanks a lot.
 
Back
Top