There is tow image in base64 format ($theme_image_enc and $theme_image_enc_little). Now I want to make the second image ($theme_image_enc_little) size smaller like 15kb. How can do that?
$image = ($_FILES["my_image"]["name"]);
$theme_image = ($_FILES["my_image"]["tmp_name"]);
$bin_string = file_get_contents("$theme_image");
$theme_image_enc = base64_encode($bin_string);
$WIDTH = 400; // The size of your new image
$HEIGHT = 300; // The size of your new image
$QUALITY = 100; //The quality of your new image
$org_w = 850;
$org_h = 660;
$theme_image_little = imagecreatefromstring(base64_decode($theme_image_enc));
$image_little = imagecreatetruecolor($WIDTH, $HEIGHT);
imagecopyresampled($image_little, $theme_image_little, 0, 0, 0, 0, $WIDTH, $HEIGHT, $org_w, $org_h);
ob_start();
imagepng($image_little);
$contents = ob_get_contents();
ob_end_clean();
echo $theme_image_enc_little = base64_encode($contents);
try to show low image size in the browser you need to reduce the quality using with imagejpeg function
// Take value between $quality = (0 < 100)
imagejpeg($theme_image_enc_little, NULL, $quality);
Related
I'm using the following PHP function to resize big images to fit 500 px width:
<?php
function resizeImage($name) {
header('Content-type: image/jpeg');
$filename = "file.jpg";
$new_width = 500;
list($width, $height) = getimagesize($filename);
$new_height = (($height*$new_width)/$width);
$image_p = imagecreatetruecolor($new_width, $new_height);
$image = imagecreatefromjpeg($filename);
imagecopyresampled($image_p, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagejpeg($image_p, "file.jpg", 100);
}
?>
For some reason the colors on the resized image aren't exactly the same as before. They aren't as clear and strong as before. As you can see [picture removed] there's more red color and brilliance in the left (original) photo.
Why that? Is there something wrong with my script? Or is it a normal resizing effect?
This is the working code I have now:
<?php
// Call the function with: resizeImage("INSERT_YOUR_FILE_NAME_INCLUDING_SUFFIX_HERE");
function resizeImage($file_name) {
// File is located at: files/original/
$filename = "files/original/".$file_name;
// The width you want the converted image has
$new_width = 500;
// Calculate right height
list($width, $height) = getimagesize($filename);
$new_height = (($height*$new_width)/$width);
// Get image
$small = new Imagick($filename);
// Resize image, but only if original image is wider what the wanted 500 px
if($width > $new_width) {$small->resizeImage($new_width, $new_height, Imagick::FILTER_LANCZOS, 1);}
// Some code to correct the color profile
$version = $small->getVersion();
$profile = "sRGB_IEC61966-2-1_no_black_scaling.icc";
if((is_array($version) === true) && (array_key_exists("versionString", $version) === true)) {$version = preg_replace("~ImageMagick ([^-]*).*~", "$1", $version["versionString"]);if(is_file(sprintf("/usr/share/ImageMagick-%s/config/sRGB.icm", $version)) === true) {$profile = sprintf("/usr/share/ImageMagick-%s/config/sRGB.icm", $version);}}if(($srgb = file_get_contents($profile)) !== false){$small->profileImage("icc", $srgb);$small->setImageColorSpace(Imagick::COLORSPACE_SRGB);}
// Safe the image to: files/small/
$small->writeImage("files/small/".$file_name);
// Clear all resources associated to the Imagick object
$small->clear();
}
?>
Don't forget to either download the icc file from http://www.color.org/sRGB_IEC61966-2-1_no_black_scaling.icc and save it in the same directory as your resize file or change $profile = "sRGB_IEC61966-2-1_no_black_scaling.icc"; to $profile = "http://www.color.org/sRGB_IEC61966-2-1_no_black_scaling.icc";!
My image file size is 800x600 and I want to resize this 800x600 to 400x300 then save both images(800x600 and 400x300) in the database base64_encode format. I can save in database first image (800x600) but how to convert a second image (400x300) in base64_encode format and save in database? I don't want to use two input fields. I think one input field enough for that.
$image = ($_FILES["my_image"]["name"]);
$theme_image = ($_FILES["my_image"]["tmp_name"]);
$bin_string = file_get_contents("$theme_image");
$theme_image_enc = base64_encode($bin_string);
You have to make a little script for create the new image from the first one and make the base64_encode on it
$WIDTH = 400; // The size of your new image
$HEIGHT = 300; // The size of your new image
$QUALITY = 100; //The quality of your new image
$DESTINATION_FOLDER = DependOfYourRepository; // The folder of your new image
// The directory where is your image
$filePath = DependOfYourRepository;
// This little part under depend if you wanna keep the ratio of the image or not
list($width_orig, $height_orig) = getimagesize($filePath);
$ratio_orig = $width_orig/$height_orig;
if ($WIDTH/$HEIGHT > $ratio_orig) {
$WIDTH = $HEIGHT*$ratio_orig;
} else {
$HEIGHT = $WIDTH/$ratio_orig;
}
// The function using are different for png, so it's better to check
if ($file_ext == "png") {
$image = imagecreatefrompng($filePath);
} else {
$image = imagecreatefromjpeg($filePath);
}
// I create the new image with the new dimension and maybe the new quality
$bg = imagecreatetruecolor($WIDTH, $HEIGHT);
imagefill($bg, 0, 0, imagecolorallocate($bg, 255, 255, 255));
imagealphablending($bg, TRUE);
imagecopyresampled($bg, $image, 0, 0, 0, 0, $WIDTH, $HEIGHT, $width_orig, $height_orig);
imagedestroy($image);
imagejpeg($bg, $DESTINATION_FOLDER.$filename, $QUALITY);
$bin_string_little = file_get_contents($DESTINATION_FOLDER.$filename);
// I remove the image created because you just wanna save the base64 version
unlike($DESTINATION_FOLDER.$filename);
imagedestroy($bg);
$theme_image_enc_little = base64_encode($bin_string_little);
// And now do what you want with the result
EDIT 1
It's possible to do it without using a directory for the second image but it's quite tricky.
$theme_image_little = imagecreatefromstring(base64_decode($theme_image_enc));
$image_little = imagecreatetruecolor($WIDTH, $HEIGHT);
// $org_w and org_h depends of your image, in your case, i guess 800 and 600
imagecopyresampled($image_little, $theme_image_little, 0, 0, 0, 0, $WIDTH, $HEIGHT, $org_w, $org_h);
// Thanks to Michael Robinson
// start buffering
ob_start();
imagepng($image_little);
$contents = ob_get_contents();
ob_end_clean();
$theme_image_enc_little = base64_encode($contents):
in my project i just do image watermarking or image combine it's working fine and code for that.
<!DOCTYPE html>
<html>
<head>
<title>test</title>
</head>
<body>
<?php
if(isset($_POST['submit']))
{
// Give the Complete Path of the folder where you want to save the image
$folder="uploads/";
move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], "$folder".$_FILES["fileToUpload"]["name"]);
$file='uploads/'.$_FILES["fileToUpload"]["name"];
$uploadimage=$folder.$_FILES["fileToUpload"]["name"];
$newname= time();
$ext = pathinfo($_FILES["fileToUpload"]["name"], PATHINFO_EXTENSION);
// Set the thumbnail name
$thumbnail = $folder.$newname.".".$ext;
$imgname=$newname.".".$ext;
// Load the mian image
if ($ext=="png" || $ext=="PNG") {
$source = imagecreatefrompng($uploadimage);
}
else if ($ext=="gif" || $ext=="GIF") {
$source = imagecreatefromgif($uploadimage);
}
else if ($ext=="bmp" || $ext=="BMP") {
$source = imagecreatefrombmp($uploadimage);
}
else{
$source = imagecreatefromjpeg($uploadimage);
}
// load the image you want to you want to be watermarked
$watermark = imagecreatefrompng('uploads/logo1.png');
// get the width and height of the watermark image
$water_width = imagesx($source)/2;
$water_height = imagesy($watermark);
// get the width and height of the main image image
$main_width = imagesx($source);
$main_height = imagesy($source);
$im_middle_w = $main_width/2;
$im_middle_h = $main_height/2;
// Set the dimension of the area you want to place your watermark we use 0
// from x-axis and 0 from y-axis
$dime_x = $im_middle_w - $water_width/2;
$dime_y = $im_middle_h - $water_height/2;
// copy both the images
imagecopy($source, $watermark, $dime_x, $dime_y, 0, 0, $water_width, $water_height);
// Final processing Creating The Image
imagejpeg($source, $thumbnail, 100);
unlink($file);
}
?>
<img src='uploads/<?php echo $imgname;?>'>
</body>
</html>
but problem with setting $water_width and i want set as half of my source image. but when i have source image of less width or more width compare to $water_width it's set it like that. see image when source image width is more.
and when width is less.
so my problem is how to set $water_width as half of source image width?
by Alex your answer it's came up like this.
This will resize watermark to half-width of original image and put it in the centre:
// load the image you want to you want to be watermarked
$watermark = imagecreatefrompng('uploads/logo1.png');
// get the width and height of the watermark image
$water_width = imagesx($watermark);
$water_height = imagesy($watermark);
// get the width and height of the main image image
$main_width = imagesx($source);
$main_height = imagesy($source);
// resize watermark to half-width of the image
$new_height = round($water_height * $main_width / $water_width / 2);
$new_width = round($main_width / 2);
$new_watermark = imagecreatetruecolor($new_width, $new_height);
// keep transparent background
imagealphablending( $new_watermark, false );
imagesavealpha( $new_watermark, true );
imagecopyresampled($new_watermark, $watermark, 0, 0, 0, 0, $new_width, $new_height, $water_width, $water_height);
// Set the dimension of the area you want to place your watermark we use 0
// from x-axis and 0 from y-axis
$dime_x = round(($main_width - $new_width)/2);
$dime_y = round(($main_height - $new_height)/2);
// copy both the images
imagecopy($source, $new_watermark, $dime_x, $dime_y, 0, 0, $new_width, $new_height);
// Final processing Creating The Image
imagejpeg($source, $thumbnail, 100);
imagedestroy($source);
imagedestroy($watermark);
imagedestroy($new_watermark);
You can try imagettftext method, if you don't want any such high perfection in transparency. You can have try of this code. You have to save a font file in your directory, here I used arial.ttf.
$im = imagecreatefrompng("png.png"); //create image data
$font = 'arial.ttf'; //font file name
$randomString = "example.com"; //string need to be shown
$main_width = imagesx($im); //finding width and height
$main_height = imagesy($im);
$posx= $main_width/2; //finding center
$posy = $main_height/2;
$color = imagecolorallocate($im, 200, 200, 200); //Creating color
$size = ($main_width/25)+1; //determine size of font. +1 to avoid 0
$temp = $size*5;
$posx = $posx-$temp; //adjust to average center
imagettftext($im,$size,0, $posx, $posy, $color, $font , $randomString); //apply a text
You have to adjust posx and posy for your text position. Size also can be adjusted with some logics.
$color = imagecolorallocate($im, 0, 0, 0);= black
and $color = imagecolorallocate($im, 255, 255, 255); = white.
You have to adjust this for your required text color.
I want to take a local image, resize it and output the dataURI. Why is my base64_encode code not working?
<?php
// Create an image instance
$imagearray = array('pop3', 'aboutme', 'passions', 'lindahlstudios', 'blog');
foreach ($imagearray as $key) {
echo $key;
//load image
$im = imagecreatefrompng($key.'button4.png');
//set width of resize
$width = 70;
$ratio = $width / imagesx($im);
$height = imagesy($im) * $ratio;
echo ' resizeTo-'.$width.'x'.$height.'<br>';
$new_image = imagecreatetruecolor($width, $height);
imagecopyresampled($new_image, $im, 0, 0, 0, 0, $width, $height, imagesx($im), imagesy($im));
//save image to file
//imagepng($new_image, $key.'button4_'.$width.'.png');
//print DataURI
echo base64_encode($new_image);
imagedestroy($new_image);
}
?>
imagecreatetruecolor returns an image resource, what you need to create the data uri is an image file, also the data uri format is data:[<MIME-type>][;charset=<encoding>][;base64],<data>
echo 'data:image/png;base64,'.base64_encode(file_get_contents($new_image_file));
If you don't want to save a file to read, you can use imagepng and output buffering
ob_start();
imagepng($new_image);
echo 'data:image/png;base64,'.base64_encode(ob_get_clean());
I have a quick question that I'm not quite sure to set up. I've seen examples elsewhere but nothing specifically like my situation. I would like to resize images using PHP so they're readable and not just wonkily stretched like if you use HTML. If they're not 250 pixels wide, or 160 pixels tall, how can I resize the picture so it's proportionate but fits within that space?
Thanks!
PHP does not manipulate images directly. You will need to use an image manipulation library such as gd or ImageMagick to accomplish this goal.
In ImageMagick, image resizing is accomplished like this:
$thumb = new Imagick('myimage.gif');
$thumb->resizeImage(320,240,Imagick::FILTER_LANCZOS,1);
$thumb->writeImage('mythumb.gif');
With GD, you can do it like this:
<?php
// The file
$filename = 'test.jpg';
$percent = 0.5;
// Content type
header('Content-Type: image/jpeg');
// Get new dimensions
list($width, $height) = getimagesize($filename);
$new_width = $width * $percent;
$new_height = $height * $percent;
// Resample
$image_p = imagecreatetruecolor($new_width, $new_height);
$image = imagecreatefromjpeg($filename);
imagecopyresampled($image_p, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
// Output
imagejpeg($image_p, null, 100);
?>
Ok, so below is an Image object that I use in my store. It maintains scale - requires GD
<?php
class Store_Model_Image extends My_Model_Abstract
{
const PATH = STORE_MODEL_IMAGE_PATH;
const URL = "/store-assets/product-images/";
public function get_image_url($width, $height)
{
$old_file = self::PATH . $this->get_filename();
$basename = pathinfo($old_file, PATHINFO_FILENAME);
$new_name = sprintf("%s_%sx%s.jpg", $basename, $width, $height);
if(file_exists(self::PATH . $new_name))
{
return self::URL . $new_name;
}
else
{
list($width_orig, $height_orig, $image_type) = #getimagesize($old_file);
$img = FALSE;
// Get the image and create a thumbnail
switch($image_type)
{
case 1:
$img = #imagecreatefromgif($old_file);
break;
case 2:
$img = #imagecreatefromjpeg($old_file);
break;
case 3:
$img = #imagecreatefrompng($old_file);
break;
}
if(!$img)
{
throw new Zend_Exception("ERROR: Could not create image handle from path.");
}
// Build the thumbnail
if($width_orig > $height_orig)
{
$width_ratio = $width / $width_orig;
$new_width = $width;
$new_height = $height_orig * $width_ratio;
}
else
{
$height_ratio = $height / $height_orig;
$new_width = $width_orig * $height_ratio;
$new_height = $height;
}
$new_img = #imagecreatetruecolor($new_width, $new_height);
// Fill the image black
if(!#imagefilledrectangle($new_img, 0, 0, $new_width, $new_height, 0))
{
throw new Zend_Exception("ERROR: Could not fill new image");
}
if(!#imagecopyresampled($new_img, $img, 0, 0, 0, 0, $new_width, $new_height, $width_orig, $height_orig))
{
throw new Zend_Exception("ERROR: Could not resize old image onto new bg.");
}
// Use a output buffering to load the image into a variable
ob_start();
imagejpeg($new_img, NULL, 100);
$image_contents = ob_get_contents();
ob_end_clean();
// lastly (for the example) we are writing the string to a file
$fh = fopen(self::PATH . $new_name, "a+");
fwrite($fh, $image_contents);
fclose($fh);
return self::URL . $new_name;
}
}
}
I resize the image at request time, so the first time the page loads an image will be resized to the required size for the template. (this means I don't have to crash a shared host trying to regenerate image thumbnails everytime my design changes)
So in the template you pass your image object, and when you need a image thumb,
<img src="<?php echo $image->get_image_url(100, 100); ?>" />
you now have a 100x100 thumb, which is saved to the Server for reuse at a later date
gd and imagemagick are two tools that may work for you
http://php.net/manual/en/book.image.php
http://php.net/manual/en/book.imagick.php
Here is something I used to use
class cropImage{
var $imgSrc,$myImage,$cropHeight,$cropWidth,$x,$y,$thumb;
function setImage($image,$moduleWidth,$moduleHeight,$cropPercent = "1") {
//Your Image
$this->imgSrc = $image;
//getting the image dimensions
list($width, $height) = getimagesize($this->imgSrc);
//create image from the jpeg
$this->myImage = imagecreatefromjpeg($this->imgSrc) or die("Error: Cannot find image!");
if($width > $height) $biggestSide = $width; //find biggest length
else $biggestSide = $height;
//The crop size will be half that of the largest side
//$cropPercent = 1.55; // This will zoom in to 50% zoom (crop)
if(!$cropPercent) {
$cropPercent = 1.50;
}
$this->cropWidth = $moduleWidth*$cropPercent;
$this->cropHeight = $moduleHeight*$cropPercent;
//$this->cropWidth = $biggestSide*$cropPercent;
//$this->cropHeight = $biggestSide*$cropPercent;
//getting the top left coordinate
$this->x = ($width-$this->cropWidth)/2;
$this->y = ($height-$this->cropHeight)/2;
}
function createThumb($moduleWidth,$moduleHeight){
$thumbSize = 495; // will create a 250 x 250 thumb
$this->thumb = imagecreatetruecolor($moduleWidth, $moduleHeight);
//$this->thumb = imagecreatetruecolor($thumbSize, $thumbSize);
imagecopyresampled($this->thumb, $this->myImage, 0, 0,$this->x, $this->y, $moduleWidth, $moduleHeight, $this->cropWidth, $this->cropHeight);
//imagecopyresampled($this->thumb, $this->myImage, 0, 0,$this->x, $this->y, $thumbSize, $thumbSize, $this->cropWidth, $this->cropHeight);
}
function renderImage(){
header('Content-type: image/jpeg');
imagejpeg($this->thumb);
imagedestroy($this->thumb);
}
}
Call it by using
$image = new cropImage;
$image->setImage($imagepath,$moduleWidth,$moduleHeight,$scaleRelation);
$image->createThumb($moduleWidth,$moduleHeight);
$image->renderImage();
Use GD or ImageMagick. Here you may find a real production example of code (used by MediaWiki) that supports consoled ImageMagick interface (transformImageMagick method), ImageMagick extension interface (transformImageMagickExt method) and GD (transformGd method).
There a simple to use, open source library called PHP Image Magician that will can help you out.
Example of basis usage:
$magicianObj = new imageLib('racecar.jpg');
$magicianObj -> resizeImage(100, 200, 'crop');
$magicianObj -> saveImage('racecar_small.png');