How can one ensure that the HTML produced by PHP code is valid?

To ensure that the HTML produced by PHP code is valid, one should make sure to properly escape any dynamic content that is being output to the HTML. This can be done using functions like htmlspecialchars() to convert special characters to HTML entities. Additionally, one should validate the HTML output using tools like W3C Markup Validation Service to catch any syntax errors or issues. 

// Example PHP code snippet to ensure valid HTML output
$htmlContent = "<p>Hello, <b>" . htmlspecialchars($dynamicContent) . "</b></p>";
echo $htmlContent;

Keywords

HTML validation PHP code W3C standards htmlspecialchars DOMDocument

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