Image Resize and save by using GD function and Percentage based

<?php
$filename = 'test.jpg';
$percent = .5;
list($width, $height) = getimagesize($filename);
$newwidth = $width * $percent;
$newheight = $height * $percent;
$thumb = imagecreatetruecolor($newwidth, $newheight);
$source = imagecreatefromjpeg($filename);
imagecopyresized($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
$ourFileName = "newtest.jpg";
imagejpeg($thumb, $ourFileName);
imagedestroy($thumb);
?>

PNG to Jpeg in PHP using GD library

<?php
function png2jpg($originalFile, $outputFile, $quality) {
    $image = imagecreatefrompng($originalFile);
    imagejpeg($image, $outputFile, $quality);
    imagedestroy($image);
}
png2jpg("img/test.png", "img/".time().".jpg", 100);
if ($handle = opendir('img/')) {
	$i=0;
   while (false !== ($entry = readdir($handle))) {
      if ($entry != "." && $entry != "..") {
         echo "<img src='img/$entry' width=150 height=100>    ";
			if($i%10==0 && $i!=0){
				echo "<br>";
			}
			$i++;
      }
   }
   closedir($handle);
}
?>

Save image from ulr using JAVA

package com.cakes;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
public class SaveImageFromUrl {
 public static void main(String[] args) throws Exception {
  String imageUrl = "http://www.avajava.com/images/avajavalogo.jpg";
  String destinationFile = "image.jpg";
  saveImage(imageUrl, destinationFile);
 }
 public static void saveImage(String imageUrl, String destinationFile) throws IOException {
  URL url = new URL(imageUrl);
  InputStream is = url.openStream();
  OutputStream os = new FileOutputStream(destinationFile);
  byte[] b = new byte[2048];
  int length;
  while ((length = is.read(b)) != -1) {
   os.write(b, 0, length);
  }
  is.close();
  os.close();
 }
}

Save image from url using php

<?php
$url = "http://www.technotrigger.com/wp-content/uploads/2014/01/house-in-green-field.jpg";
$content = file_get_contents($url);
file_put_contents('flower.jpg', $content);
?>
<img src="flower.jpg">

To add watermark image with original image by using php GD functions

$main_img = "Porsche_911_996_Carrera_4S.jpg"; // main big photo / picture
$watermark_img = "watermark.gif"; // use GIF or PNG, JPEG has no tranparency support
$padding = 80; // distance to border in pixels for watermark image
$opacity = 20; // image opacity for transparent watermark
$watermark = imagecreatefromgif($watermark_img); // create watermark
$image = imagecreatefromjpeg($main_img); // create main graphic
if(!$image || !$watermark) die("Error: main image or watermark could not be loaded!");
$watermark_size = getimagesize($watermark_img);
$watermark_width = $watermark_size[0];
$watermark_height = $watermark_size[1];
$image_size = getimagesize($main_img);
$dest_x = $image_size[0] - $watermark_width - $padding+10;
$dest_y = $image_size[1] - $watermark_height - $padding-80;
// copy watermark on main image
imagecopymerge
($image, $watermark,$dest_x, $dest_y, 0, 0, 
$watermark_width, $watermark_height, $opacity);
// print image to screen
header("content-type: image/jpeg");
imagejpeg($image);
imagedestroy($image);
imagedestroy($watermark); 

To Crop image using PHP GD function

cropImage(150,100, 'example.png', 'png', 'image.png');
function cropImage($nw, $nh, $source, $stype, $dest) {
$size = getimagesize($source);
echo "
".$w = 500;
echo "
".$h = 400;
switch($stype) {
case 'gif':
$simg = imagecreatefromgif($source);
break;
case 'jpg':
$simg = imagecreatefromjpeg($source);
break;
case 'png':
$simg = imagecreatefrompng($source);
break;
}
$dimg = imagecreatetruecolor($nw, $nh);
echo "
".$wm = $w/$nw;
echo "
".$hm = $h/$nh;
echo "
".$h_height = $nh/2;
echo "
".$w_height = $nw/2;
if($w> $h) {
echo "
".$adjusted_width = $w / $hm;
echo "
".$half_width = ($adjusted_width / 2)+25;
echo "
".$int_width = $half_width - $w_height;
imagecopyresampled($dimg,$simg,-$int_width,0,0,0,$adjusted_width,$nh,$w,$h);
}
elseif(($w <$h) || ($w == $h)) {
$adjusted_height = $h / $wm;
$half_height = $adjusted_height / 2;
$int_height = $half_height - $h_height;
imagecopyresampled($dimg,$simg,0,-$int_height,0,0,$nw,$adjusted_height,$w,$h);
} else {
imagecopyresampled($dimg,$simg,0,0,0,0,$nw,$nh,$w,$h);
}

imagejpeg($dimg,$dest,100);
}

Google Maps Image APIs

Get Google Map Image for specific latittude & longitude

Static Maps API

<img src="http://maps.google.com/staticmap?size=500x400&markers=11,78&zoom=12">


<img src="http://maps.googleapis.com/maps/api/streetview?size=200x200&location=40.720032,-73.988354&heading=235">

Image uploading Instant preview

<img src="http://www.designofsignage.com/application/symbol/building/image/600x600/no-photo.jpg" width='200px' height='200px' id="preview" title="No Image"><br><br>
<input type="file"  name="postimage" id="postimage" onchange="readURL(this,200,200)" >
<script type='text/javascript' src='http://code.jquery.com/jquery-1.11.1.min.js'></script>
<script type='text/javascript'>
function readURL(input,w,h) {
 if (input.files && input.files[0]) {
  var reader = new FileReader();
  reader.onload = function (e) {
   $('#preview').attr('src', e.target.result);
   $("#preview").attr("width",w);
   $("#preview").attr("height",h);
  }
  reader.readAsDataURL(input.files[0]);
 }
}
</script>

A Simple PHP Thumbnail Image Resize Script

Step 1: To create Test.php & copy paste below code

<?php


session_start();
header("Pragma: public");
header("Cache-Control: max-age = 604800");
header("Expires: ".gmdate("D, d M Y H:i:s", time() + 604800)." GMT");

function thumbnail($image, $width, $height) {

 if($image[0] != "/") { // Decide where to look for the image if a full path is not given
  if(!isset($_SERVER["HTTP_REFERER"])) { // Try to find image if accessed directly from this script in a browser
   $image = $_SERVER["DOCUMENT_ROOT"].implode("/", (explode('/', $_SERVER["PHP_SELF"], -1)))."/".$image;
  } else {
   $image = implode("/", (explode('/', $_SERVER["HTTP_REFERER"], -1)))."/".$image;
  }
 } else {
  $image = $_SERVER["DOCUMENT_ROOT"].$image;
 }
 $image_properties = getimagesize($image);
 $image_width = $image_properties[0];
 $image_height = $image_properties[1];
 $image_ratio = $image_width / $image_height;
 $type = $image_properties["mime"];

 if(!$width && !$height) {
  $width = $image_width;
  $height = $image_height;
 }
 if(!$width) {
  $width = round($height * $image_ratio);
 }
 if(!$height) {
  $height = round($width / $image_ratio);
 }

 if($type == "image/jpeg") {
  header('Content-type: image/jpeg');
  $thumb = imagecreatefromjpeg($image);
 } elseif($type == "image/png") {
  header('Content-type: image/png');
  $thumb = imagecreatefrompng($image);
 } else {
  return false;
 }

 $temp_image = imagecreatetruecolor($width, $height);
 imagecopyresampled($temp_image, $thumb, 0, 0, 0, 0, $width, $height, $image_width, $image_height);
 $thumbnail = imagecreatetruecolor($width, $height);
 imagecopyresampled($thumbnail, $temp_image, 0, 0, 0, 0, $width, $height, $width, $height);

 if($type == "image/jpeg") {
  imagejpeg($thumbnail);
 } else {
  imagepng($thumbnail);
 }

 imagedestroy($temp_image);
 imagedestroy($thumbnail);

}

if(isset($_GET["h"])) { $h = $_GET["h"]; } else { $h = 0; }
if(isset($_GET["w"])) { $w = $_GET["w"]; } else { $w = 0; }

thumbnail($_GET["img"], $w, $h);

?>


Step 2: Index.php

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