How to convert special unicode character to it's closest ASCII in PHP

Question

I have a problem when user input a string in special Unicode like and my system cannot distinguish it with the string "tuyendung" that is written in ASCII. The question is how can I normalize the input string to ASCII before storing it in the database?

Sample Input:

(Char code: 0xd835, 0xde01, 0xd835, 0xde02, 0xd835, 0xde06, 0xd835, 0xddf2, 0xd835, 0xddfb, 0xd835, 0xddf1, 0xd835, 0xde02, 0xd835, 0xddfb, 0xd835, 0xddf4)

Expected output:

tuyendung

(Char code: 0x74, 0x75, 0x79, 0x65, 0x6e, 0x64, 0x75, 0x6e, 0x67)

Does this answer your question? [Replacing accented characters php](https://stackoverflow.com/questions/3371697/replacing-accented-characters-php) — kmoser, Jun 04 '20 at 07:07

Evert · Accepted Answer · 2020-06-04T06:54:48.913

4

It looks like the //TRANSLIT option can do the trick here.

<?php

$input = '';
echo iconv('UTF-8', 'US-ASCII//TRANSLIT', $input);

This turns (what I think are?) math symbols like to t

edited Jun 04 '20 at 06:54

answered Jun 04 '20 at 06:40

Evert

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Thank you very much! That is what I'm looking for! – Vũ Nhật Anh Jun 05 '20 at 01:20

score 0 · Answer 2 · answered Jun 04 '20 at 06:35

I don't know what "tuyendung" is.

But in php, you can convert the character sets with the "iconv" function or you can keep the original form in a blob field in the database. You can make any transformation you want in the screening.

Maybe it gives an idea.

How to convert special unicode character to it's closest ASCII in PHP

2 Answers2