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Can't collect data from database the correct way

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linux-howto

http://stackoverflow.com – I have the function getDistance(). The function findDistance() inside the while loop, calculates the distance between 2 users, by using coordinates (latitude-longitude), and returns to var $djson the distance in meters. $distance is a string committed by the user for first time and $user_old["distance"] is a string which is called from a database in $query. I wanted to be able in $matched_names, to save all the names of the users from my database, for who the condition inside if() is true, regarding the sum of the distance of the new user who commits his data and the old ones inside the datab (HowTos)