What are common mistakes to avoid when using fwrite() in PHP to save data to a file?
Common mistakes to avoid when using fwrite() in PHP to save data to a file include not checking if the file is successfully opened, not handling errors properly, and not closing the file after writing data. To avoid these mistakes, always check if the file is opened successfully, handle errors using appropriate error handling techniques, and ensure to close the file after writing data.
<?php
$file = fopen("data.txt", "w") or die("Unable to open file!");
$data = "Hello, World!";
fwrite($file, $data) or die("Unable to write to file!");
fclose($file);
echo "Data written successfully!";
?>