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Online Sandbox for SQL and PHP: Write, Run, Test, and Share SQL Queries and PHP Code
<?php
$city = 'Ривенделл';
$result = '';
$symbolsWithCounters = array_count_values(mb_str_split($city));
foreach ($symbolsWithCounters as $word => $counter) {
$result .= $word . ':' . str_repeat('*', $counter) . ',';
}
$result = rtrim($result, ',');
echo $result;