What are some best practices for ensuring consistent encoding and character set usage across PHP files, HTML output, and database interactions to prevent data corruption or display issues?

To ensure consistent encoding and character set usage across PHP files, HTML output, and database interactions, it is important to set the correct character encoding in the following places: 1. Specify the character set in the HTML output using meta tags. 2. Set the character set in the database connection. 3. Use PHP functions like mb_internal_encoding() and mb_http_output() to ensure consistent encoding. 

// Set character encoding in HTML output
<meta charset="UTF-8">

// Set character encoding in the database connection
$dsn = 'mysql:host=localhost;dbname=mydatabase;charset=utf8';
$pdo = new PDO($dsn, $username, $password);

// Set internal encoding in PHP
mb_internal_encoding('UTF-8');
mb_http_output('UTF-8');

Keywords

UTF-8 htmlentities mb_convert_encoding htmlspecialchars mysqli_real_escape_string

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