fopen():The PHP fopen() function is used to open a file.
Here,
"fopen": is the PHP open file function"$file_name": is the name of the file to be opened"$mode": is the mode in which the file should be opened.| Mode | Description |
|---|---|
r | Read only mode, file pointer will set at the starting position of file. |
r+ | Read and write mode, file pointer will set at the starting of file. |
w | Write mode only, if the file exists it will open otherwise a new file will be created. If the file already exists, earlier contents will be overwritten |
w+ | Write and read mode, if file exists contents will be overwritten otherwise a new file will be created. |
a | Append file, if file exists it will open and file pointer will set at the ending of file, if it doesn’t exists a new file will be created. |
a+ | Read and append mode, if file exists the pointer will set at the end of file, otherwise a new file will be created. |
x | It is used to create and open a file only for writing purpose, if file exists this mode will return false and display an error. If file doesn’t exists it will simply create a file |