PHP fopen() Function
Complete PHP Filesystem Reference
Definition and Usage
The fopen() function opens a file or URL.
If fopen() fails, it returns FALSE and an error on failure. You can hide the error output by adding an '@' in front of the function name.
Syntax
fopen(filename,mode,include_path,context)
| Parameter | Description |
|---|---|
| filename | Required. Specifies the file or URL to open |
| mode | Required. Specifies the type of access you require to the
file/stream. Possible values:
|
| include_path | Optional. Set this parameter to '1' if you want to search for the file in the include_path (in php.ini) as well |
| context | Optional. Specifies the context of the file handle. Context is a set of options that can modify the behavior of a stream |
Tips and Notes
Note: When writing to a text file, be sure to use the correct line-ending character! Unix systems use \n, Windows systems use \r\n, and Macintosh systems use \r as the line ending character. Windows offers a translation flag ('t') which will translate \n to \r\n when working with the file. You can also use 'b' to force binary mode. To use these flags, specify either 'b' or 't' as the last character of the mode parameter.
Example
<?php
$file = fopen("test.txt","r");
$file = fopen("/home/test/test.txt","r");
$file = fopen("/home/test/test.gif","wb");
$file = fopen("http://www.example.com/","r");
$file = fopen("ftp://user:password@example.com/test.txt","w");
?>
Complete PHP Filesystem Reference
