What are the differences between ASCII values in JavaScript and PHP that could cause discrepancies in encryption results?

The main difference between ASCII values in JavaScript and PHP is how they handle character encoding. JavaScript uses UTF-16 encoding by default, while PHP uses UTF-8 encoding. This difference can cause discrepancies in encryption results when working with ASCII values. To solve this issue, you can explicitly specify the character encoding in both JavaScript and PHP to ensure consistency in encryption results. 

// Specify UTF-8 encoding in PHP
mb_internal_encoding("UTF-8");
mb_http_output("UTF-8");

// Convert string to ASCII values in PHP
$string = "Hello";
$ascii_values = array_map('ord', str_split($string));

// Use the ASCII values in PHP encryption algorithm
// For example, using openssl_encrypt function
$encrypted_data = openssl_encrypt(implode(',', $ascii_values), 'AES-256-CBC', $key, 0, $iv);

Keywords

ASCII values JavaScript PHP encryption discrepancies

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