How can textareas be nested in PHP and what potential issues may arise from doing so?

Textareas can be nested in PHP by using the `htmlspecialchars` function to escape the content of the textarea before displaying it. This prevents any HTML or JavaScript code within the textarea from being executed, ensuring the security of the application. 

<textarea><?php echo htmlspecialchars($nested_textarea_content); ?></textarea>

Keywords

PHP textareas nesting potential issues validation

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