PHP Open File
To open a file in PHP, fopen() function is used. In general, fopen() function accepts two parameters:
Filename: This parameter specifies the name of the file to be opened.
Mode: This parameter specifies the mode in which the file should be opened.
Syntax:
resource fopen ( string $filename , string $mode [, bool $use_include_path = false [, resource $context ]] )
OR
resource fopen ( string $filename , string $mode )
MODES of fopen function:
| $mode | MODE | DESCRIPTION |
| r | Read only mode | Pointer starts from the beginning of the file. |
| w | Write only mode | Overwrites the existing file or creates a new file if it doesn’t exist. Pointer starts from the beginning of the file. |
| a | Write only mode | Continues writing in the existing file or creates a new file if it doesn’t exist. Pointer starts from the end of the file. |
| x | Write only mode | Creates a new file if it doesn’t exist or returns FALSE if the file already exists. Pointer starts from the beginning of the file. |
| c | Write only mode | Creates a new file if it doesn’t exist or does nothing if the file already exists. Pointer starts from the beginning of the file. |
| r+ | Read Write mode | Pointer starts from the beginning of the file. |
| w+ | Read Write mode | Overwrites the existing file or creates a new file if it doesn’t exist. Pointer starts from the beginning of the file. |
| a+ | Read Write mode | Continues writing in the existing file or creates a new file if it doesn’t exist. Pointer starts from the end of the file. |
| x+ | Read Write mode | Creates a new file if it doesn’t exist or returns FALSE if the file already exists. Pointer starts from the beginning of the file |
| c+ | Read Write mode | Creates a new file if it doesn’t exist or does nothing if the file already exists. Pointer starts from the beginning of the file. |
