Unexpected error ..

[ftrudeau]

Greetings people.
Could someone tell me what isnt valid in this short expression ?

if (empty($fields = $this->fields[$table]))
{
// code
}

error output : PHP Parse error: parse error, expecting `')''

this will work however :

$fields = $this->fields[$table];
if (empty($fields))
{
// code
}

Thanks !

[swr]

In the first example, you are passing the result of an expression to empty, which is not allowed.

From the [man]empty[/man] manual page:

"Note: empty() only checks variables as anything else will result in a parse error. In otherwords, the following will not work: empty(addslashes($name))."

Some other things only accept variables and not expressions. For example, functions that are defined to pass arguments by reference can't accept an expression.