Are there any specific PHP functions or libraries that can assist in adding symbols to favorites?

To add symbols to favorites in a PHP application, you can utilize sessions to store the favorite symbols. You can create a function that adds symbols to the favorites array stored in the session. This function can check if the symbol is already in the favorites array to prevent duplicates. 

// Start or resume a session
session_start();

// Function to add symbol to favorites
function addToFavorites($symbol) {
    if (!isset($_SESSION['favorites'])) {
        $_SESSION['favorites'] = [];
    }
    
    if (!in_array($symbol, $_SESSION['favorites'])) {
        $_SESSION['favorites'][] = $symbol;
    }
}

// Example of adding symbol 'AAPL' to favorites
addToFavorites('AAPL');

Keywords

PHP functions libraries symbols favorites

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