函数多次运行后的变量值[重复]

Question

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• Reference: What is variable scope, which variables are accessible from where and what are “undefined variable” errors? 3 answers

I'm having an issue with a var value, that should increase everytime a function runs.

Illustrative code:

$i = 1;
function() {
     ...
     $i++;
}

This function is called on a page multiple times, and i need that $i value to be used on a lot of stuff inside it.

Thing is, $i value always ends up with the value equal to 1.

Any clues?

Thanks

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Answer 1

The $i in the function is not the one you defined outside it.

Here's a resolution:

$i = 1;
function test(&$i) {
    $i++;
}

test($i);