Backend DevelopmentPHP ProblemHow to solve the problem of garbled Chinese characters in php output?
Solution: 1. For pages that are mixed with HTML and PHP, you need to use the meta tag or header() function to unify the page encoding; 2. For pure PHP static pages, use the header() function to set the encoding to "utf -8"; 3. Use mysql_query() to set the encoding for PHP connection to mysql.
Generally speaking, there are two reasons for the appearance of garbled characters. The first is due to the incorrect encoding (charset) setting, which causes the browser to parse with the wrong encoding. As a result, the screen is full of messy "Books from Heaven". Secondly, the file is opened in the wrong encoding and then saved. For example, a text file was originally encoded in GB2312, but it was opened in UTF-8 encoding and then saved. To solve the above garbled code problem, you first need to know which aspects of development involve encoding:
1. File encoding: refers to the encoding in which the page file (.html, .php, etc.) itself is saved. . Notepad and Dreamweaver will automatically recognize the file encoding when opening the page, so there will be less problems. However, ZendStudio does not automatically recognize the encoding. It will only open the file in a certain encoding according to the configuration of the preferences. If you accidentally open the file with the wrong encoding while working, garbled characters will appear as soon as you save it after making the modification.
2. Page declaration encoding: In the HTML code HEAD, you can use (this sentence It must be written in front of
3. Database connection encoding: refers to which encoding is used to transmit data to the database when performing database operations. It should be noted here that it should not be confused with the encoding of the database itself, such as MySQL internal The default is latin1 encoding, which means that Mysql stores data in latin1 encoding, and data transmitted to Mysql in other encodings will be converted into latin1 encoding.
I know where encoding is involved in WEB development, and You will know the reason for the garbled characters: the above three encoding settings are inconsistent. Since most of the various encodings are compatible with ASCII, English symbols will not appear, and Chinese characters will be unlucky.
Solution to php outputting Chinese garbled characters
##The first solution for mixed HTML and PHP pages
Method 1: Use tagIf PHP code is embedded in HTML, you can use to solve the Chinese garbled problem
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>php输出中文乱码</title> </head> <body> <div class="demo"> <?php echo "php中文网！"; ?> </div> </body> </html>Method 2: Use the header() function
<?php
header("content-type:text/html;charset=utf-8"); //设置编码
?>
Second type, Chinese garbled problem of pure PHP page (the data is static)
If your PHP page has garbled characters, just Just add the following code at the beginning of the page.<?php
header("content-type:text/html;charset=utf-8"); //设置编码
?>
The third type, PHP Mysql Chinese garbled problem
In addition to following the In addition to the three operations mentioned above, you must also add database encoding before querying/modifying/adding your data. Moreover, it is worth noting that the UTF8 here is different from the previous one, and there is no horizontal line in the middle.
<?php
mysql_query('SET NAMES UTF8');
//接下来的就是查出数据或者修改，增加
?>If you are using MySQL version 4.1 or higher, you can set a character encoding after the link database operation, like the following
Note: The mysql_query("set names 'coding'"); code added before the PHP program that needs to perform database operations must be consistent with the PHP coding. If the PHP coding is gb2312, then mysql The encoding is gb2312. If it is utf-8, then the mysql encoding is utf8, so that there will be no garbled characters when inserting or retrieving data.For more programming-related knowledge, please visit:
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