Make all global variables available in a function

Question

My project uses a template system to put the pages together and there are many variables involved. Usually the template is loaded directly from an index file and not from within a function.

However, at the moment I'm simply making this function to display an error page:

function show_error($error){ global $root; global $template; $content=$root."/includes/pages/error_page.html.php"; include $root . $template; exit(); }

However, since the template uses many variables outside the scope of this function, it just comes up with lots of variable not found errors.

Is there a way of simply making all global variables available inside of a function? I'd rather not individually declare all possible variables inside as it would be quite tedious and because I am often adding more variables in the template.

your template should not be accessing variables outside of its scope — tereško
– tereško, Commented May 16, 2017 at 12:38
you might benefit from learning how to actually do some basic templating in PHP: chadminick.com/articles/simple-php-template-engine.html — tereško
– tereško, Commented May 16, 2017 at 12:50

Alexey Chuhrov · Accepted Answer · 2017-05-16 13:53:23Z

You can use extract() to import all globals into function scope

$foo = 'bar'; // global scope function test(){ extract($GLOBALS, EXTR_OVERWRITE, 'g'); // import with prefix to avoid mess echo $g_foo; // outputs: bar }

Read more: http://php.net/manual/ru/function.extract.php

kainaw · Accepted Answer · 2017-05-16 12:36:53Z

0

If $content and $root are in global context, you can access them inside the function by adding this to the function before you use them:

global $content, $root;

answered May 16, 2017 at 12:36

kainaw

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2 Comments

dlofrodloh Over a year ago

Sorry I have edited my question, that is already included. It's the many other variables that the template uses which is causing the issue as I would have to declare them all.

kainaw Over a year ago

If you are using tons and tons of global variables, you should use $GLOBALS.

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