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2025-09-23 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Internet Technology >
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This article mainly introduces the relevant knowledge of "what is the function of PHP file processing". Xiaobian shows you the operation process through actual cases. The operation method is simple and fast and practical. I hope this article "what is the function of PHP file processing" can help you solve the problem.
The fopen() function is used to open files in PHP.
open the file
The fopen() function is used to open files in PHP.
The first argument to this function contains the name of the file to be opened, and the second parameter specifies which mode to use to open the file:
Files may be opened in the following modes:
Mode Description r Read only. Start at the beginning of the file. R+ read/write. Start at the beginning of the file. W only writes. Open and empty the contents of the file; if the file does not exist, create a new file. w+ Read/write. Open and empty the contents of the file; if the file does not exist, create a new file. a Added. Open and write to the end of the file, or create a new file if it doesn't exist. a+ read/append. Preserve file content by writing to the end of the file. X is written. Create a new file. Returns FALSE and an error if the file already exists. x+ Read/Write. Create a new file. Returns FALSE and an error if the file already exists.
Note: The fopen() function returns 0 (false) if it cannot open the specified file.
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