PHP Conversion of Coordinates pasted from excel

I need a PHP webpage that will convert a batch of coordinates. There will not be any imported data - user will copy/paste the coordinates from excel into textarea. Conversions to the following formats are required: 1) Degrees, Minutes 37 23.516, 122 02.620 2) Degrees, Minutes, Seconds 37 23 30, 122 02 37 - script has to accept 3 possible formats 3) Decimal (google format) 37.391933,-122.043667 - script has to accept 3 possible formats 4) UTM coordinates 584658m 4138752m 10 S The website will contain 4 textarea boxes - see the attached document conversions.pdf. Anytime users copy/pastes the coordinates from excel (separated by tab) OR any text editor (separated by comma) into one of the boxes, the values in the other three boxes will be instantly calculated. Any number of coordinates may be inserted (up to 60,000). All coordinates that can be computed should be computed. So if the user enters 200 rows of coordinates into one text area, he will get exactly 200 rows of converted coordinates (or errors) in the other three boxes in the same order. There should is no need to use database - I do not plan to store the data. Requirement: you have to have an experience with converting coordinates using PHP, otherwise this project will become a nightmare. You will get paid when the script is finished and successfully tested - all features have to work. Clean code required. If you did something very similar, please give me a link so I can have a look - I assume you did something similar and will be able to reuse some of the code - that is why the budget is relatively low. Thank you, J.