Guess random number

this is my first try with php i'm having an error i'm not sure why this is happening hope someone might help .

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The error i'm having is : Notice: Undefined index: hasStarted in C:\xampp\htdocs\test\random.php on line 3[/hide]

well i know but i heard that in php you don't need to assign a value to a variable before using it.

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this is quoted from w3resource .

(04-02-2017, 01:27 PM)Vi-Sion Wrote:

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The error i'm having is : Notice: Undefined index: hasStarted in C:\xampp\htdocs\test\random.php on line 3

Your problem is written in plain english "Undefined index: hasStarted in C:\xampp\htdocs\test\random.php on line 3"
You are trying to access the variable $_SESSION["hasStarted"] but is is not set.
You can check if a variable is set with the method isset()

(04-02-2017, 01:55 PM)Vi-Sion Wrote:

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i also heard it takes a default value if i didn't give it one so if used as a boolean and didn't give it a value it's default value should be false

Yes. In php an unset variable will always give you false.
But in your code, you are trying to access a variable index, that will always trow you an error if it is unset.

i also heard it takes a default value if i didn't give it one so if used as a boolean and didn't give it a value it's default value should be false

(04-02-2017, 01:47 PM)Vi-Sion Wrote:

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well i know but i heard that in php you don't need to assign a value to a variable before using it.

Yes you do.

(04-02-2017, 01:47 PM)Vi-Sion Wrote:

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this is quoted from w3resource .

This quote states that you don't have to declare variables, witch is right.
But you do have to set a value to a variable before using it.

Thanks for your help i got it, much appreciated.

(04-02-2017, 02:12 PM)Vi-Sion Wrote:

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Thanks for your help i got it, much appreciated.

I am glad I helped

Here's my final code i'll be glad to get comments if there's anything i should fix in my code.

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[/hide]

I recommended to using Gaussian Distribution , which implemented as random number generator.

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I hope that help , comrade.