@jerad
In PHP, the global
keyword is used to access a global variable inside a function. A global variable is a variable that is defined outside of a function and can be accessed from any part of the code.
Here is an example of how to use the global
keyword in PHP:
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$counter = 0; // define a global variable function increment_counter() { global $counter; // access the global variable $counter++; } increment_counter(); // call the function echo $counter; // output: 1 |
In the above example, we define a global variable $counter
and a function increment_counter()
that increments the value of $counter
by 1. Inside the function, we use the global
keyword to access the global variable $counter
.
When we call the increment_counter()
function and then output the value of $counter
, it will display 1 because the function has incremented the value of the global variable.
Note that using global variables can make your code more difficult to maintain and debug, so it's generally a good practice to avoid them if possible.