Php fopen
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PHP function fopen
This function create a file handle for a file or URL.
Syntax fopen
- name is a file name or URL string
- mode: specifices how the fopen handle the access
- include_path: when sets it to true, it searches for the file in the include_path (in php.inin)
- context: sets this option can modify the behavior of a stream.
fopen(name,mode, include_path, context);
mode
- r: read only (read starts at the very begining of the file)
- r+: read and write (it starts at the very begining of a file)
- w: write only (create and clear the content of a file before start to write a new content)
- w+ read and write (create and clear the content of a file before start to write to a new content)
- a: write only (create and write content to the end of the file)
- a+ read and write (create and write content to the end of the file, but preserves file content)
- x: write only (create a new file, and generate error when the file is already existed)
- x+: read and write (create a new file, and generate error when the file is already existed)
- c: write only (create a new file when it does not already exist.
Note
For portability, it is strongly recommended that you always use the 'b' flag when opening files with fopen().
Example 1
<?php
$fh = fopen("/home/abc/file.txt", "r");
$fh = fopen("/home/abc/file.gif", "wb");
$fh = fopen("http://www.google.com/", "r");
$fh = fopen("ftp://user:[email protected]/somefile.txt", "w");
?>
Example 2
$fh = fopen ("http://www.some.com/index.html", "r");
while (!feof($fh)) {
echo fgets($fh,4096);
}
Related Links
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