About the usage of "quotation&". When and when should not be used

boltcrank

About the usage of "quotation&". When and when should not be used

lsf110999

Do n’t use it if you do n’t know, Zend will optimize

chache

Generally used when referencing variables, when characters are linked with (character) variables.

风云狂

If the value of the passed variable needs to be changed during your use, then you can write like this!
$ aaa = 0
open (&$ aaa)
{
     $ aaa = 1;
}
That's about it!

casillas

Very troublesome, learning

qijun2005

Look at the manual. This is not very demanding. PHP's zend engine will be optimized.

方小帅

Look at the C language.

noendenergy

Look at variable substitution in C.