gyazo.php

<?PHP

/*
 * PHP upload for Gyazo - v1.2 - 02/16/2011
 * http://benalman.com/news/2009/10/gyazo-on-your-own-server/
 * 
 * Copyright (c) 2009 "Cowboy" Ben Alman
 * Licensed under the MIT license
 * http://benalman.com/about/license/
 */

// The local path in which images will be stored (change as neceesary).
$path = '/srv/www/gyazo/'; // you can also use dirname( __FILE__ ) . "/relative/to/this/script/";

// The URI path at which images will be accessed (change as neceesary).
$uri  = 'http://' . $_SERVER['HTTP_HOST'] . '/grab/';

// "imagedata" can be adjusted in the form-data name attr in gyazo's script configuration file.
// if it's non-existant or no size, then bail
if ( !isset( $_FILES['imagedata']['error'] ) || $_FILES['imagedata']['size'] < 1 ) {
  echo $uri, 'invalid.png';
  exit; 
}

// Generate a unique filename.
$i = 0;
do {
  // change -rand(4,7) to a static negative number if you want filenames of a certain length
  $filename = substr( md5( time() . $i++ ), -rand(4,7) ) . '.png';
} while ( file_exists( "$path$filename" ) );

// move the file - if moving the file breaks, bail
if ( !move_uploaded_file( $_FILES['imagedata']['tmp_name'], "$path$filename" ) ) {
  echo $uri, 'error.png'; 
  exit;
}

// Compress the image (destroying any alpha transparency).
$image = @imagecreatefrompng( "$path$filename" );
imagepng( $image, "$path$filename", 9 );
imagedestroy( $image );

// Return the image URI.
echo $uri, $filename;

?>