$ POST["tags"] or $ POST['tags']?

which is better and why?

[kkonline]

What is the difference if i write

$_POST["tags"]

and

$_POST['tags']

?
which is better or which is preferred?

[dreamcatcher]

PHP will generally try to evaluate what's between the double quotes - very minor issue but best practice is to use single quotes.

dc

[vincevincevince]

Unless you're talking high load high performance code, it really doesn't matter. I tend to just write $_POST[tags] and have that level of warning turned off.

[LBmtb]

I'm with dreamcatcher. I try and use single quotes wherever possible.

[eelixduppy]

>> I tend to just write $_POST[tags] and have that level of warning turned off.

Although it only throws a warning and is correctly interpreted this shouldn't be done this way. If you "just happen" to define a constant "tags" it will create a bigger error. Use quotes always; single ones are easier to type :)