How can I get UTF-8 data from MySQL?
Four good steps to always get correctly encoded UTF-8 text:
- Run this query before any other query: mysql_query(“set names ‘utf8′”);
- Add this to your HTML head:
- Add this at top of your PHP code:
What is MySQL default encoding?
The default MySQL server character set and collation are latin1 and latin1_swedish_ci , but you can specify character sets at the server, database, table, column, and string literal levels.
Which utf8 collation should I use?
If you elect to use UTF-8 as your collation, always use utf8mb4 (specifically utf8mb4_unicode_ci). You should not use UTF-8 because MySQL’s UTF-8 is different from proper UTF-8 encoding. This is the case because it doesn’t offer full unicode support which can lead to data loss or security issues.
Should I use UTF-8 or utf8mb4?
The difference between utf8 and utf8mb4 is that the former can only store 3 byte characters, while the latter can store 4 byte characters. In Unicode terms, utf8 can only store characters in the Basic Multilingual Plane, while utf8mb4 can store any Unicode character.
Should I use utf8mb4?
If you need a database, don’t use MySQL or MariaDB. Use PostgreSQL. If you need to use MySQL or MariaDB, never use “utf8”. Always use “utf8mb4” when you want UTF-8.
What is difference between utf8mb3 and utf8mb4?
utf8mb3 supports only characters in the Basic Multilingual Plane (BMP). utf8mb4 additionally supports supplementary characters that lie outside the BMP. utf8mb3 uses a maximum of three bytes per character. utf8mb4 uses a maximum of four bytes per character.
How do I change utf8mb4 to utf8?
To solve the problem open the exported SQL file, search and replace the utf8mb4 with utf8 , after that search and replace the utf8mb4_unicode_520_ci with utf8_general_ci . Save the file and import it into your database. After that, change the wp-config. php charset option to utf8 , and the magic starts.
What is best collation for MySQL?
The best way to use utf8mb4 is to use the collation utf8mb4_unicode_ci. About 6% of possible characters are supported by the character set, utf8, which is based on the UTF-8 code. The Basic Plane Multilingual (BMP) is the only language supported by utf8.
What is best collation to use in MySQL?
If you’re using MySQL 5.7, the default MySQL collation is generally latin1_swedish_ci because MySQL uses latin1 as its default character set. If you’re using MySQL 8.0, the default charset is utf8mb4. If you elect to use UTF-8 as your collation, always use utf8mb4 (specifically utf8mb4_unicode_ci).
How do I add a special character to a MySQL query?
MySQL – How to include special characters in a query
- \0 – An ASCII NUL (0x00) character.
- \’ – A single quote ( ‘ ) character.
- \” – A double quote ( ” ) character.
- \b – A backspace character.
- \n – A newline (linefeed) character.
- \r – A carriage return character.
- \t – A tab character.
- \Z – ASCII 26 (Control-Z).
How do I escape special characters in MySQL?
MySQL recognizes the escape sequences shown in Table 9.1, “Special Character Escape Sequences”….Table 9.1 Special Character Escape Sequences.
|Escape Sequence||Character Represented by Sequence|
|\0||An ASCII NUL ( X’00’ ) character|
|\’||A single quote ( ‘ ) character|
|\”||A double quote ( ” ) character|
|\b||A backspace character|