Are there any potential pitfalls to be aware of when reading a TXT file and outputting data into a table in PHP?

One potential pitfall when reading a TXT file and outputting data into a table in PHP is not properly handling the data from the file, which can lead to security vulnerabilities such as code injection. To mitigate this risk, it is important to sanitize the data before outputting it into the table. 

<?php

// Read the TXT file
$file = fopen('data.txt', 'r');
$data = fread($file, filesize('data.txt'));
fclose($file);

// Sanitize the data
$sanitized_data = htmlspecialchars($data);

// Output the data into a table
echo "<table>";
echo "<tr><th>Data</th></tr>";
echo "<tr><td>$sanitized_data</td></tr>";
echo "</table>";

?>

Keywords

file handling fopen fgetcsv error handling data validation

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