> echo foo(dog); // outputs "This is a dog"
This is an example of using a "bareword" - PHP doesn't recognize _dog_ as
any sort of reserved word or constant, so it sends it like a quoted string.
I don't recommend using this because it's ambiguous whether you mean "dog"
or if _dog_ is a constant or whatever else is possible.
> echo foo('dog'); // outputs "This is a dog"
Single-quoted string: this is good for strings that don't need to be
"interpretted" by the parser; it's the ideal way to pass the string 'dog'
to foo() in this case.
> echo foo("dog"); // outputs "This is a dog"
Double-quoted string: this WILL be interpretted by the parser; for example,
if you had to pass the whole string "This is a dog" to the function, but
"dog" could actually be any word contained in $thing, then you'd do
something like this:
echo foo("This is a $thing");
Et cetera...
>
> Does it matter which way I pass my arguments to foo? All arguments were
> passed as a string variable.
There are some very slight performance changes between these, but mostly
it's a matter of style.
--Toby
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