How can the chmod() function be used effectively in PHP to ensure proper file permissions for writing operations?

When performing writing operations on files in PHP, it is important to ensure that the file permissions are set correctly to allow writing. This can be achieved using the chmod() function in PHP, which changes the file mode of a file. By using the chmod() function with appropriate permissions (e.g., 0666 for read and write permissions for all users), we can ensure that the file is writable before performing any writing operations. 

$file = 'example.txt';
$permissions = 0666;

if (file_exists($file)) {
    chmod($file, $permissions);
}

// Now you can perform writing operations on the file

Keywords

chmod file permissions writing operations PHP function file access

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