The fopen Function
The fopen function opens a file or URL and returns a pointer to the resource. The first parameter of the function is the path to the file or URL, the second parameter is the opening mode. Returns a file pointer on success, false on error.
Syntax
fopen(filename, mode, [use_include_path], [context]);
Example
Open a file for reading:
<?php
$res = fopen('file.txt', 'r');
var_dump($res);
?>
Code execution result:
resource(5) of type (stream)
Example
Open a file for writing (if the file does not exist, it will be created):
<?php
$res = fopen('newfile.txt', 'w');
var_dump($res);
?>
Code execution result:
resource(5) of type (stream)
Example
Try to open a non-existent file for reading:
<?php
$res = fopen('nonexistent.txt', 'r');
var_dump($res);
?>
Code execution result:
false
Example
Open a URL for reading:
<?php
$res = fopen('https://example.com', 'r');
var_dump($res);
?>
Code execution result:
resource(5) of type (stream)
