What potential issue is indicated by the warning message "File exists" in the PHP script?

The "File exists" warning message in a PHP script indicates that the file being created or written to already exists in the specified location. This can lead to potential data loss or overwrite of important information. To solve this issue, you can check if the file exists before attempting to create or write to it, and handle the situation accordingly. 

$filename = 'example.txt';

if (file_exists($filename)) {
    // Handle file exists situation
    echo "File already exists";
} else {
    // Create or write to the file
    $file = fopen($filename, 'w');
    fwrite($file, 'Hello, World!');
    fclose($file);
    echo "File created successfully";
}

Keywords

File exists warning message PHP script issue error.

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