How can file permissions impact the ability to write to a file in PHP?

File permissions can impact the ability to write to a file in PHP by restricting the user's ability to modify or create files. To solve this issue, you can change the file permissions to allow write access for the user running the PHP script. 

$file = 'example.txt';
$handle = fopen($file, 'w');

if ($handle) {
    fwrite($handle, 'Hello, World!');
    fclose($handle);
} else {
    echo 'Unable to open file for writing.';
}

Keywords

file permissions write PHP error access control

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