On 14-04-29 09:38 AM, Christoph Becker wrote:
Kumar Saurabh Sinha wrote:
Difference between Language Construct & Functions:
*Language Constructs*
Constructs are elements that are built-into the language and, therefore,
follow special
rules.
ACK.
Perhaps the most common of them is the echo statement, which allows
you to write data to the script’s output:
echo 10; // will output 10
It’s important to understand that echo is not a function and, as such, it
does not have
a return value. If you need to output data through a function, you can use
print()
instead:
print is a language construct and not a function. Try e.g.
call_user_func('print', 'foo');
However, it's interesting that print nonetheless has a return value
(which always is 1).
One of the most popular constructs has a return value: isset.
Cheers,
Rob.
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