Analyze the causes and solutions of garbled characters in phpexcel

With the widespread application of PHP language in development, more and more developers have encountered the situation where phpexcel outputs garbled characters. Don’t panic when facing this kind of problem. This article will introduce to you the reasons and solutions for garbled characters in phpexcel.

1. Reasons for garbled characters

1. Encoding problem

The encoding setting of the phpexcel file is inconsistent with the encoding of the local environment, resulting in the generated Excel file being Chinese Characters are garbled. A common encoding problem is that the encoding format of Excel cells is UTF-8 format, while the encoding format output to the page is GB2312 format.

2. Font problem

If a certain font is used in the Excel file, and the font is not installed on the server where Excel is generated, the Chinese characters of the generated Excel file will be default Using other fonts results in garbled Chinese characters.

3. PHP version issue

The phpexcel library has certain requirements for the PHP version. If the PHP version is lower than 5.2.x, Chinese characters will also appear in the Excel file generated by phpexcel. Garbled characters. Therefore, before using phpexcel, you need to check whether the PHP version on the server meets the requirements.

2. Solution

1. Adjust encoding

For encoding problems, you can convert the Excel file output by phpexcel into UTF-8 format to avoid The problem of garbled Chinese characters. The specific method is as follows:

$objWriter->setUseBOM(true); 
$objWriter->setCharset("UTF-8"); 
$objWriter->setEnclosure("");

Among them, the setUseBom method indicates whether to add a BOM header in the Excel document, the setCharset method indicates setting the encoding format of the document, and the setEnclosure method indicates the quotation mark style of the data segment. It is recommended to set it to an empty string.

2. Change font

For font problems, we need to install the missing font on the server. If installing fonts is not practical, you can also modify the fonts in the Excel table to fonts that have been installed on the server. Although this method is not perfect, it can also alleviate the problem of garbled characters.

The specific code is as follows:

$excel->getDefaultStyle()->getFont()->setName('黑体');

3. Upgrade PHP version

If the PHP version is too low, you can try to upgrade the PHP version, which can also solve the problem of phpexcel The problem of garbled output.

In short, the solution to the phpexcel garbled problem can be solved from multiple aspects such as encoding and fonts, and different solutions can also be used in combination. As long as we carefully analyze the causes of the garbled code problem and comprehensively apply various solutions, we will be able to efficiently and quickly eliminate the trouble of phpexcel outputting garbled codes.

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