How can PHP functions be optimized for better performance when dealing with font embedding?

When dealing with font embedding in PHP functions, it is important to optimize the code for better performance by reducing unnecessary operations and improving efficiency. One way to achieve this is by caching the embedded font data to avoid repetitive loading and processing. Additionally, using a more efficient method to handle font embedding, such as using a library like TCPDF or FPDF, can also help improve performance.

// Example of optimizing PHP function for font embedding performance

// Cache the embedded font data
function getEmbeddedFontData($fontFile) {
    static $cachedFonts = [];
    
    if (!isset($cachedFonts[$fontFile])) {
        $fontData = file_get_contents($fontFile);
        $cachedFonts[$fontFile] = $fontData;
    }
    
    return $cachedFonts[$fontFile];
}

// Example usage
$fontFile = 'arial.ttf';
$fontData = getEmbeddedFontData($fontFile);