What are some best practices for aligning text vertically in PHP using imagettfbbox()?

When aligning text vertically in PHP using imagettfbbox(), it is important to calculate the vertical position of the text based on the font size and the height of the image. One common approach is to use the imagettfbbox() function to get the bounding box of the text and then calculate the vertical position by taking into account the font size and the image height. By properly calculating the vertical position, you can ensure that the text is aligned correctly within the image.

// Set the font size and text
$fontSize = 20;
$text = "Sample Text";

// Get the bounding box of the text
$bbox = imagettfbbox($fontSize, 0, 'path/to/font.ttf', $text);

// Calculate the vertical position
$height = $bbox[1] - $bbox[7];
$verticalPosition = ($imageHeight - $height) / 2;

// Draw the text at the calculated vertical position
imagettftext($image, $fontSize, 0, $x, $verticalPosition, $color, 'path/to/font.ttf', $text);