What are the potential risks of setting a write protection on a .txt file in PHP?

Setting a write protection on a .txt file in PHP can prevent accidental or unauthorized modifications to the file. However, it may also restrict legitimate write operations that are necessary for the application to function properly. To mitigate this risk, you can implement error handling to gracefully handle any write attempts that are blocked due to the write protection. 

$file = 'example.txt';

// Set write protection on file
chmod($file, 0444);

// Attempt to write to file
if (file_put_contents($file, 'Hello, World!') === false) {
    echo "Error: Unable to write to file.";
}

Keywords

file permissions chmod fopen fwrite security vulnerability

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