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PHP include not seeing defined variable?
This is a question which I already know the answer. Its just for fun to see how many people can really code:
We have two files, one called index.php
one called test.php
index.php
---------------
<?php
$GLOBAL['test'] = "This will never work, as i have deliberately not sent it somewhere";
function test() {
// HINT
include 'test.php";
}
?>
---------
test.php
---------
<?php
$sometext = $GLOBAL['test'];
echo $sometext;
?>
Simple error, but can you spot what i have deliberately not done. I've given a hint, the missing bit of code is around there :P most coders will recognise the "error" is around line 5406 lol.
I make these questions so people can learn, my other php question i simply swapped the define and the call around. I was surprised how many people cant see simple mistakes, but it would drive someone insane as there are no actual errors.
The answer will need 2 things, otherwise the variable will never show. If i had included the first the answer would have been on the question lol.
@ juliepelletier you saw 1 1/2 of the 2 errors:
$globals was indeed missing the S and the function was not called, its deliberately written like that because its incomplete it needs just one more item before it would work.
As for my quotes that was a typo lol, i'll give you a bonus for that lol, you are of course correct i should have paid more attention. I'll award you best answer too, the bit you missed was the global was never passed to the function :) it should read:
<?php
$GLOBALS['test'] = "This will never work, as i have deliberately not sent it somewhere";
test($GLOBALS['test']);
function test($GLOBALS['test']) {
include 'test.php';
}
The reason it wouldnt work is because we didnt call the function, and we didnt pass the variable to the function.
if you just use include 'filename.php'; it will inherit the variables, however in a function it does not, and the values need to be passed.
1 Answer
- juliepelletierLv 75 years agoFavorite Answer
Here are my observations on those awful lines of code:
- $GLOBAL does not exist. You probably meant to use $GLOBALS.
- Globals are to be avoided at all cost for code to be maintainable.
- Your quotes surrounding test.php are mismatched.
- You do not call the test() function so obviously the echo statement won't be called.
- Including code from within functions is very disorganized and hardly maintainable.
Conclusion: You should start by learning to do better code if you intend to teach to others.
