PHP GD - Align text center-horizontally and decrease font size to keep it inside the image

Question

Hope you are doing great.

I’m still a newbie with php so after making some reading and while checking some posts here I was able to put some text over an image with the

Answer 1

You need the width of the image and the width of the text to relate both.

// get image dimensions
list($img_width, $img_height,,) = getimagesize("fabian.jpg");

// find font-size for $txt_width = 80% of $img_width...
$font_size = 1; 
$txt_max_width = intval(0.8 * $img_width);    

do {        
    $font_size++;
    $p = imagettfbbox($font_size, 0, $font_path, $text);
    $txt_width = $p[2] - $p[0];
    // $txt_height=$p[1]-$p[7]; // just in case you need it
} while ($txt_width <= $txt_max_width);

// now center the text
$y = $img_height * 0.9; // baseline of text at 90% of $img_height
$x = ($img_width - $txt_width) / 2;

imagettftext($jpg_image, $font_size, 0, $x, $y, $white, $font_path, $text);