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
IF you gain some knowledge or the information here solved your programming problem. Please consider donating to the less fortunate or some charities that you like. Apart from donation, planting trees, volunteering or reducing your carbon footprint will be great too.
Advertisement
Tutorials
+28.3k Golang : Get and Set User-Agent examples
+9.7k Golang : Sieve of Eratosthenes algorithm
+7.9k Golang : Generate random Chinese, Japanese, Korean and other runes
+10.7k Golang : md5 hash of a string
+8.3k Golang : Changing a RGBA image number of channels with OpenCV
+4.2k Python : Convert(cast) string to bytes example
+7.6k Golang : Convert(cast) []byte to io.Reader type
+9.1k Fix ERROR 1045 (28000): Access denied for user 'root'@'ip-address' (using password: YES)
+3.7k JavaScript: Add marker function on Google Map
+11.2k Golang : How to check if a string starts or ends with certain characters or words?
+11.8k Golang : Convert IPv4 address to packed 32-bit binary format