How do you call a function only once in PHP?

Functions that can be called only once

$foo_called = false;

function foo()
{
    if($foo_called)
    {
        return;
    }

    $foo_called = true;

    // do something.
}

Example

function foo()
{
    static $foo_called = false;
    if (!$foo_called) {
        $foo_called = true;
        // etc.
    }
}

Conclusion

In this page (written and validated by A. Gawali) you learned about . What's Next? If you are interested in completing PHP tutorial, we encourage you simply to start here: PHP Tutorial.

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