What potential issues can arise when using fopen to create a file in PHP?

One potential issue that can arise when using fopen to create a file in PHP is that the file may not be created due to permission issues. To solve this problem, you can explicitly set the file permissions when creating the file by using the optional mode parameter in fopen. 

$file = 'example.txt';
$handle = fopen($file, 'w');
if ($handle === false) {
    die('Cannot open file');
}

// Set file permissions to 0644
chmod($file, 0644);

fclose($handle);

Keywords

fopen file creation PHP error handling permissions

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