Number of characters
Jump to navigation
Jump to search
| Example of string | Number of characters | Number of bytes |
|---|---|---|
| fox | 3 | 3 |
| The quick brown fox jumps over the lazy dog | 43 | 43 |
| 狐 | 1 | 3 |
| 象 | 1 | 3 |
| 🐘 | 1 | 4 |
| 敏捷的棕毛狐狸從懶狗身上躍過 | 14 | 28 |
// number of characters
echo mb_strlen("狐", 'UTF-8') . PHP_EOL; // return 1
echo mb_strlen("《王大文 Dawen》", 'UTF-8') . PHP_EOL; // return 11
// number of bytes
echo strlen("狐") . PHP_EOL; // return 3
echo strlen("《王大文 Dawen》") . PHP_EOL; // return 21
- MySQL: MySQL CHAR_LENGTH() function
// number of characters
SELECT CHAR_LENGTH("狐"); /* return 1 */
SELECT CHAR_LENGTH("《王大文 Dawen》"); /* return 11 */
// number of bytes
SELECT LENGTH("狐"); /* return 3 */
SELECT LENGTH("《王大文 Dawen》"); /* return 21 */
- MySQL :: MySQL 8.0 Reference Manual :: 11.4.1 The CHAR and VARCHAR Types e.g. VARCHAR(5) or CHAR(5) means can hold up to 5 characters.
- Excel: LEN, LENB functions / LEN、LENB 函數
// number of characters
=LEN("狐") // return 1
=LEN("《王大文 Dawen》") // return 11
// number of bytes
=LENB("狐") // return 2
=LENB("《王大文 Dawen》") // return 16