I will write you a high quality PHP scripts

TL;DR
I will write you a PHP script, that will meet your needs. The script will be high quality, work on any desired OS and PHP version and would be tested (both by hand and automatically, if applicable).

The process
Upon first contacting me, I will make sure to get all the information I need for your script. That may include:

• which PHP version should the script work in
• what should the script do
• what should be the input/output of the script
• which PHP extensions can I use
• what is the general idea behind the script

If requested, I will prepare an user documentation of the script (summarizing all the important stuff from the data you provided) at no extra cost, so you can see exactly what the script will do.

Then I will start working on it, keeping you updated on the progress and also asking additional questions if something needs to be clarified.

When I am finished, I will pass you the script, so you can test it and check by yourselves. If you are satisfied, my work is done and you can enjoy the script, otherwise, I can fix anything you want to fix and reiterate.