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@NogDogMar 05.2015 — #Works okay for me (after I stick a "<?php" tag at the start).
What sort of output do you get? I got this, running it from the command line:
@NogDogMar 06.2015 — #
That's the purpose of "global", to allow access to a variable that was created in the global scope inside of the function's scope. The cited script should have worked as it did for me, accessing the global value of $tt within the function.
However, global injects a strong dependency between the function and any code that uses it. Therefore, its almost always (maybe strike that word "almost") to pass variables into your functions as function parameters instead of using global -- and pass them in by reference if you want/need the function to operate directly on that variable.
I am perplexed why this global is not working
I have placed the following code in a PHP script and the global, $tt, does not have a value within the “test()” function. Am I missing something so simple I cannot see it?
[code]
$tt = 10;
print_r(“tt: ” . $tt . “<br>”);
// Test
function test() {
global $tt;
print_r(“tt inside: ” . $tt . “<br>”);
}
print_r(“I am here<br>”);
test(); exit;
Many thanks…
Todd
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@NogDogMar 05.2015 — #Works okay for me (after I stick a "<?php" tag at the start).What sort of output do you get? I got this, running it from the command line:
<i>
</i>$ php global.php
tt: 10<br>I am here<br>tt inside: 10<br>
0
@NogDogMar 06.2015 — #I tend not to use the global keyword either, but think it <em>might</em> be because when you declare the $tt to be global in test() you're masking the already global $tt that's declared at the start of the script. Try just chucking out the global keyword from the test() function and see if it suddenly starts behaving.[/QUOTE]
That's the purpose of "global", to allow access to a variable that was created in the global scope inside of the function's scope. The cited script should have worked as it did for me, accessing the global value of $tt within the function.
However, global injects a strong dependency between the function and any code that uses it. Therefore, its almost always (maybe strike that word "almost") to pass variables into your functions as function parameters instead of using global -- and pass them in by reference if you want/need the function to operate directly on that variable.