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@ 2021-10-15T16:08:06Z

<?php
var_dump(
    mb_strwidth(''),       
    mb_strwidth('a'),       // LATIN SMALL LETTER A
    mb_strwidth("\u{ff41}") // FULLWIDTH LATIN SMALL LETTER A
);

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
mb_strwidth: documentation ( source)

preferences:dark modelive previewkey bindings

155.09 ms | 405 KiB | 5 Q