Question

Possible Duplicate:
Annoying PHP error: “Strict Standards: Only variables should be passed by reference in”

I have this line of code,

$extension=end(explode(".", $srcName));

when I fun my function I get

PHP Strict Standards: Only variables should be passed by reference in

I am not sure how to solve this

Answer 1

The function end() requires a variable to be passed-by-reference and passing the return-value of a function doesn’t acheive this. You’ll need to use two lines to accomplish this:

$exploded = explode(".", $srcName);
$extension = end($exploded);

If you’re simply trying to get a file-extension, you could also use substr() and strrpos() to do it in one line:

$extension = substr($srcName, strrpos($srcName, '.'));

Or, if you know the number of .‘s that appear in the string, say it’s only 1, you can use list() (but this won’t work if there is a dynamic number of .‘s:

list(,$extension) = explode('.', $srcName);