pageimage.php

<?php

// text to print on Image
$text = $page->title;
$image = $page->image->first()->httpUrl;

$info = getimagesize($image);
$type = $info['mime'];

switch ($type) {
  case "image/jpeg":
		$gd_img = imagecreatefromjpeg($image); //jpeg file
		break;
	
	case "image/gif":
		$gd_img = imagecreatefromgif($image); //gif file
		break;
	
	case "image/png":
		$gd_img = imagecreatefrompng($image); //png file
		break;
	
	default:
		die('Not a valid Image');
		break;
}

// Allocate A Color For The Text
$white = imagecolorallocate($gd_img, 255, 255, 255);

// path to font
$font = $config->paths->templates . "fonts/Arial.ttf";

// height of the font
$font_size = 25; 

// left
$x = 0; 

// top
$y = $font_size + 0;

// (array) Print Text On Image, third value is angle
imagettftext($gd_img, $font_size, 0, $x, $y, $white, $font, $text);

/**
 * Output Page Image
 *
 */

// collect infos
$maxAge = (60 * 60 * 24 * 2); // 48 hours
$imgTimestamp = filemtime($imgFilename);
$imgExpiration = intval(time() + $maxAge);

// create headers
$imgHeaders = array();
$imgHeaders[] = 'Content-type: ' . $type;      // or other type
//$imgHeaders[] = 'Content-Length: ' . filesize($image);
$imgHeaders[] = 'Date: ' . gmdate('D, d M Y H:i:s',time()) . ' GMT';
$imgHeaders[] = 'Last-Modified: ' . gmdate('D, d M Y H:i:s',$imgTimestamp) . ' GMT';
$imgHeaders[] = 'Expires: ' . gmdate('D, d M Y H:i:s', $imgExpiration) . ' GMT';
$imgHeaders[] = 'pragma: cache';
$imgHeaders[] = "Cache-Control: max-age={$maxAge}";
$imgHeaders[] = "Cache-Control: no-transform, public, s-maxage={$maxAge}, max-age={$maxAge}";  // public|private

// send header
foreach($imgHeaders as $imgHeader) header($imgHeader);

switch ($type) {
	case "image/jpeg":
		imagejpeg($gd_img);
		break;
	
	case "image/gif":
		imagegif($gd_img);
		break;
	
	case "image/png":
		imagepng($gd_img);
		break;
	
	default:
		die('Not a valid Image');
		break;
}

// Free up memory
imagedestroy($gd_img);