Please see this example:
In JavaScript
console.log('♂️'.length) // 7
In PHP
<?php
var_dump(strlen("♂️")); // int(17)
var_dump(mb_strlen("♂️")); // int(5)
How can I make sure my backend count my string length exactly as my frontend?
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Joseph
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Very related: https://stackoverflow.com/a/54369605/476 – deceze Dec 08 '20 at 07:24
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See @ÁlvaroGonzález answer to the duplicate, it gives a better explanation than the accpeted answer. – Nick Dec 08 '20 at 07:31