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For this problem, you are to cannibalize any available code and write a PHP script which will do the following. Using the quadratic formula, solve the equation Ax² + Bx + C = 0.

1. Introduce the program to the user
2. Hardset the coefficients, e.g., $a = 1;
3. Calculate the value of the discriminant
4. Checking the discriminant, calculate the root(s) and print the results

Use your pseudocode as your documentation comments.