Operating on unicode is of course always slower. But only non-ascii strings are stored upgraded by use utf8. So the performance impact is necessary to get the correct length of such strings. (It's also cached in MG_LEN after the first access.)
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Operating on unicode is of course always slower. But only non-ascii strings are stored upgraded by
use utf8. So the performance impact is necessary to get the correct length of such strings. (It's also cached in MG_LEN after the first access.)