: This article mainly introduces PHP file operations. if you are interested in the PHP Tutorial, you can refer to it.
Mode description
| R |
Open the file as read-only. The file pointer starts at the beginning of the file. |
| W |
Open the file to write-only. Delete the file content or create a new file if it does not exist. The file pointer starts at the beginning of the file. |
| A |
Open the file to write-only. The existing data in the file is retained. The file pointer starts at the end of the file. Create a new file if the file does not exist. |
| X |
Create a new file to write-only. Returns FALSE and error if the file already exists. |
| R + |
The file is read/write, and the file pointer starts at the beginning of the file. |
| W + |
Open the file as read/write. Delete the file content or create a new file if it does not exist. The file pointer starts at the beginning of the file. |
| A + |
Open the file as read/write. The existing data in the file is retained. The file pointer starts at the end of the file. Create a new file if it does not exist. |
| X + |
Create a new file as read/write. Returns FALSE and error if the file already exists. |
The above introduces PHP file operations, including the content, hope to be helpful to friends who are interested in PHP tutorials.