How to solve the Chinese garbled characters in php gd library?

Solution: 1. The entire website uses UTF8 encoding. If GB2312 or GBK encoding has been used, character encoding conversion is required; 2. Change the default character set in the Apache configuration file to UTF8; 3. gd Cancel the "enable-gd-jis-conv" option in the library and recompile.

The reason why the php gd library generates Chinese garbled characters

1. The reason for server encoding. When using the GD library to output Chinese strings, use the imagettftext() function. Since the default encoding of the string parameter of the imagettftext function is UTF8, if the server encoding is inconsistent and the corresponding character encoding format conversion is not performed, it is easy for Chinese characters to become garbled when using the gd library to output images.

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2. The correct TTF font file was not selected. If you want to output Chinese characters when using the gd library, you need to select the correct TTF font file.

php gd library Chinese garbled solution

According to the previously introduced principle of php gd library generating Chinese garbled code, the method to solve php gd library Chinese garbled code is actually Very simple.

1. It is recommended that the entire site uses UTF8 encoding. If you are already using GB2312 or GBK encoding, please use iconv or a custom gb2312 and utf8 conversion function to convert character encodings.

2. If you have just set up a php environment, it is recommended to change the default character set in the Apache configuration file to UTF8, that is, AddDefaultCharset UTF8.

3. If the above method does not work, please check whether you added the –enable-gd-jis-conv option when compiling the gd library. This option is to allow the gd library to support Japanese-encoded fonts. Please cancel this option and recompile. I have not verified this method. It is estimated that it is mainly used to install and configure the PHP environment under Unix. This situation generally does not occur in the Windows environment. It seems that the default PHP configuration file is commented out.

4. Another reason why Chinese garbled characters are generated when using the php gd library is that the correct TTF font is not selected. You need to choose a font that supports Chinese. Commonly used Chinese font files are simsun.ttc and simhei.ttf.

OK, as long as you follow the above method, basically using the php gd library to generate Chinese garbled characters can be solved. As long as you check carefully, it is actually very convenient to solve the Chinese garbled characters in the gd library.

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