<?php function prepareKeywordsForDatabase($string) { $keywords = explode(',', $string); $keywords = array_map('trim', $keywords); $array = array(); foreach ($keywords as $k) { if ($k == '') { continue; } $k = preg_replace('#[\s]{1,}#', ' ', $k); $array[] = $k; } return implode(', ', $array); } echo prepareKeywordsForDatabase('ciao, come , ti ,va la, vita');
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