In what scenarios would it be more advisable to use GIF or JPG images instead of PNG when working with transparency in PHP?

When working with transparency in PHP, it may be more advisable to use GIF or JPG images instead of PNG in scenarios where the image does not require a high level of transparency or when file size is a concern. GIF and JPG images typically have smaller file sizes compared to PNG, which can be beneficial for faster loading times on websites. However, it is important to note that GIF images only support binary transparency (fully transparent or fully opaque pixels), while JPG images do not support transparency at all.

// Example of converting a PNG image to a JPG image with reduced transparency
$pngFile = 'image.png';
$jpgFile = 'image.jpg';

$source = imagecreatefrompng($pngFile);
imagejpeg($source, $jpgFile, 90);

imagedestroy($source);