How to change number to alpha-numeric function formatPackageNumber ($input) { //$input = $_GET['number']; $alpha_array = array("A", "B" , "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"); $number_array = array("0", "1" , "2", "3", "4", "5", "6", "7", "8", "9"); $output = ""; for($i=0; $i<=5; $i++){ if($i>=4) { $divisor = pow(26,$i-3)*pow(10,3); } else { $divisor = pow(10,$i); } $pos = floor($input/$divisor); ...
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