How can PHP developers prevent the unintended execution of PHP code when including files in HTML elements like textareas?

To prevent the unintended execution of PHP code when including files in HTML elements like textareas, PHP developers can use the htmlspecialchars function to escape special characters in the file content before displaying it in the textarea. This will ensure that the PHP code is displayed as plain text rather than being executed. 

<?php
$file_content = file_get_contents('file.php');
$escaped_content = htmlspecialchars($file_content);
echo '<textarea>' . $escaped_content . '</textarea>';
?>

Keywords

PHP code injection include htmlentities security

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