File types can be divided into: text files: containing only plain text characters image files: digital images, such as photos audio files: digital sounds, such as music video files: images and audio streams, such as movies executable files: Executable instructions, such as application data files: Non-text data, such as financial data Document files: Formatted documents, such as report archive files: Packaged collections of multiple files, such as compressed files
Classification of file types
File type refers to a classification of the content and purpose of electronic files. According to different standards, file types can have multiple classifications Way. The most common classification method is based on the attributes and uses of the file content, which are mainly divided into the following types:
1. Text file:
- Content only Consists of plain text characters and does not contain any formatting information.
- The extension is usually ".txt".
- For example: text documents, code files.
2. Image file:
- Contains digital image information, composed of pixels.
- Common extensions include ".jpg", ".png", and ".gif".
- For example: photos, illustrations, charts.
3. Audio file:
- Digital data that records and plays sound.
- Common extensions include ".mp3", ".wav", and ".aiff".
- For example: music, voice recordings, podcasts.
4. Video file:
- Contains images and audio streams for playing dynamic video content.
- Common extensions include ".mp4", ".mov", and ".avi".
- For example: movies, video tutorials, game recordings.
5. Executable file:
- Contains instructions that the computer can execute to run a program.
- Common extensions include ".exe" (Windows) and ".app" (macOS).
- For example: applications, games.
6. Data files:
- Store specific types of non-text data, such as numbers, database records, and tables.
- Common extensions include ".csv" (comma separated values), ".xlsx" (Excel spreadsheet), ".sql" (SQL database).
- For example: financial data, scientific data sets, customer information.
7. Document file:
- A formatted document containing text, images, charts and other elements.
- Common extensions include ".docx" (Microsoft Word) and ".pdf" (Adobe Acrobat).
- For example: reports, contracts, papers.
8. Archive files:
- Pack multiple files together to save space or facilitate transfer.
- Common extensions include ".zip" and ".rar".
- For example: software installation package, compressed file collection.
The above is the detailed content of What are the file types?. For more information, please follow other related articles on the PHP Chinese website!

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