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@ 2020-02-14T08:06:23Z

<?php

$string = '$£%wow!😮';

echo 'No mb: ' . strlen($string) . PHP_EOL;
echo 'With mb: ' . mb_strlen($string) . PHP_EOL;

$chrArray = preg_split('//u', $string, -1, PREG_SPLIT_NO_EMPTY);
foreach ($chrArray as $chr) {
    echo $chr . ' ' . strlen($chr) . PHP_EOL;
}

Output
Performance
VLD
References
Branches

mb_strlen: documentation ( source)
preg_split: documentation ( source)

preferences:dark modelive preview

24.48 ms | 405 KiB | 5 Q