I developed a php code in reading from file the values of x and y. difficulties

I developed a php code in reading from file the values of x and y. difficulties facing with the program should read and display it line by line. After each line is display ask the user if he/she wants to modify these values. if yes the user types the new x and y values. when you finish computing/displaying the linear regressions parameters (already in the code) save the values in another file.Make sure re-entered values are not illegaling (<= 0) or (text characters) only greater than zero numeric. note: i need the timing log sheetHow much time it took from you planning?How much time it took from you designing?How much time it took from you compiler?How much time it took from you coding?How much time it took from you testing?How many line of codes added?Whats the issue you have faced and what are they?And your real full name for exam documentation?

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