<?php
$input = '1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,15,33,33,35,37,39';
$inputArray = explode(',', $input);
foreach ( $counted as $k=>$v ) {
if ( $v > 1 ) {
echo "{$k} се повтаря {$v} пъти!<br>";
}
}
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