PHP : Proper way to get UTF-8 character or string length
Problem :
Was trying to get a length of an unicode(UTF-8) character with PHP. Trouble is, PHP echoes back 3, which is technically correct, but not accurate.
For example :
<?php
echo strlen('黄');
?>
will return 3 instead of 1. How to get PHP to count the unicode character as 1?
Diagnostic :
UTF-8 character is multi-byte and need to tell PHP to use the proper encoding to measure the length.
Solution :
Use mb_strlen()
function with UTF-8
encoding to get the string length. For example :
<?php
echo mb_strlen('黄', 'UTF-8');
?>
Output :
1
which is accurate.
References :
See also : PHP : Extract part of a string starting from the middle
By Adam Ng
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