Your contribution cannot be approved because it does not follow the Utopian Rules.
Hi, this is the reason your contribution was rejected
- Tutorials must be technical instructions that teach non-trivial aspects of an open-source project.
All the information in your tutorial can already be found in PHP's documentation, e.g. for the sin() function or the getrandmax(); it doesn't provide any unique value. For tutorial tutorials I recommend you don't create a tutorial where you simply explain what certain functions do (especially when it's already explained in the official documentation), as that isn't considered a valid contribution to Utopian.io and thus won't be accepted.
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[utopian-moderator]
I do not know if you have ever written PHP, but in most software languages the code is already written with functions. What is important here is the way the function is used and given examples. The written values of the functions are not constant and the code structure is determined according to the variable being written. I believe that this tutorial content conforms to the rules and standards. Please do a detailed review or check with your supervisors. Thank you for your understanding.
As I said, a tutorial where you simply explain what certain functions do (especially trivial ones like these) and show basic examples cannot be considered a valid contribution to Utopian.io. It is simply too trivial and has little to no value. I feel like I already gave a detailed review in the comment above, so if you disagree with my decision, then feel free to contact my supervisor.