What are the best practices for handling HTML entities in PHP code to prevent errors?

When working with HTML entities in PHP code, it is important to properly handle them to prevent errors such as double-encoding or decoding issues. To ensure correct handling, use functions like htmlspecialchars() to encode special characters before outputting them in HTML, and html_entity_decode() to decode HTML entities when necessary. 

// Encoding HTML entities
$special_text = "<p>This is some text with special characters like & and <.</p>";
$encoded_text = htmlspecialchars($special_text, ENT_QUOTES, 'UTF-8');
echo $encoded_text;

// Decoding HTML entities
$encoded_text = "<p>This is some text with special characters like & and <.</p>";
$decoded_text = html_entity_decode($encoded_text, ENT_QUOTES, 'UTF-8');
echo $decoded_text;

Keywords

htmlspecialchars htmlentities htmlspecialchars_decode html_entity_decode XSS

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