Php check value - Hilfen findetFalse is not truthy. Checking if a variable is empty or not when you have more than one will add so many similar lines to your code; and will require re-writing of course. You might understandably trip over this or the inverse - passing boolean true to check against an array of e. Here is an implementation. Zero is often exclude from the natural numbers, that's why there's the second parameter.
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