<?php
// Create Thumbnail of radar image
// I've found for code to work, you need to have a graphic
// of the output file name on your server and CHMOD 666
// Also the input file needs CHMOD 666

// Shut off error reporting so we don't get any errors displaying for visitors
error_reporting(0);

//Where are the images located
$my_input_file = $_SERVER['DOCUMENT_ROOT'] . 'koax_br248.jpg';
$my_output_file = $_SERVER['DOCUMENT_ROOT'] . 'miniradar.jpg';

/Get current server time
$mytime = time();

// set output jpeg quality
$jpeg_quality = 90;

// set thumbnail height to use
$thumb_height = 120;

// set thumbnail width to use
$thumb_width = 120; 

// $size[0] = the width of input image : $size[1] = the height of input image
$size = getimagesize($my_input_file);

// Cache the image until there's a new original to make a thumbnail of
// This greatly reduces server load and page load time.
if (filemtime($my_input_file) > filemtime($my_output_file)) {

	// Delay .25s just in case the file is still uploading to server
	usleep(250000);

	// create image in memory
	// if your image is png...
	// $src_img = imagecreatefrompng($my_input_file);
	$src_img = imagecreatefromjpeg($my_input_file);
	$dst_img = imagecreatetruecolor($thumb_width,$thumb_height);
	imagecopyresampled($dst_img, $src_img, 0, 0, 0, 0, $thumb_width, $thumb_height, $size[0], $size[1]);

	// write output image
	imagejpeg($dst_img, $my_output_file, $jpeg_quality); 

	// free memory used
	imagedestroy($src_img);
	imagedestroy($dst_img);

// If radar image is over 20 minutes old, add text that radar is down
} else if (filemtime($my_input_file) < $mytime - 1200) {

	// create image in memory
	// if your image is png...
	// $src_img = imagecreatefrompng($my_input_file);
	$src_img = imagecreatefromjpeg($my_input_file);
	$dst_img = imagecreatetruecolor($thumb_width,$thumb_height);
	imagecopyresampled($dst_img, $src_img, 0, 0, 0, 0, $thumb_width, $thumb_height, $size[0], $size[1]);

	// If radar image is over 20 minutes old, add text that radar is down
	$white = imagecolorallocate ($dst_img, 255,255,255);
	imagestring($dst_img,2,20,50,"RADAR DOWN",$white);
	imagestring($src_img,2,230,270,"RADAR DOWN",$white);

	// write output image
	imagejpeg($dst_img, $my_output_file, $jpeg_quality);
	imagejpeg($src_img, $my_input_file, 100);

	// free memory used
	imagedestroy($src_img);
	imagedestroy($dst_img);

}

?>