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";!
i am trying to upload image and then resizing the image and save it. the upload is working fine and the resizing is also working but the resized image is not saving. if i use header ("Content-type: image/jpeg"); then it showing the resized image also. but after resizing the image is not getting saved.
here is my code:
$filename = $_FILES['myfile']['name'][$count] ;
$filename = uploadfilename($filename);
$filename1=$iiid."blog".$filename;
$target_path = "../photo/";
$target_path = $target_path . repc($filename1);
move_uploaded_file($_FILES['myfile']['tmp_name'][$count], $target_path);
$dbfield = $count+1;
$sql="update product set img_".$dbfield." ='".rep($filename1)."' where id='".$iiid."'";
$result=mysql_query($sql);
$count++;
// header ("Content-type: image/jpeg");
// print_r(get_resource_type($uploadedImage));exit();
// $resizedImage = PIPHP_ImageResize($target_path,400,400);
$w = 100;
$h = 100;
list($width, $height) = #getimagesize($target_path);
$source = #ImageCreateFromJPEG($target_path);
$resized_img = #ImageCreateTrueColor($w, $h);
#ImageCopyResampled($resized_img, $source, 0, 0, 0, 0, $w, $h, $width, $height);
#ImageJPEG($resized_img);
My image is not getting displayed after resizing it.
require('connect.php');
if (isset($_FILES['image']) && $_FILES['image']['size'] > 0) {
// Temporary file name stored on the server
$tmpName = $_FILES['image']['tmp_name'];
$imagename = $_FILES["image"]["name"];
// Get new dimensions
list($width, $height) = getimagesize($tmpName);
echo "orginal width".$width."<br/>";
echo "orginal height".$height."<br/>";
$new_width= $width * 0.5;
$new_height = $height * 0.5;
echo "new width".$new_width."<br/>";
echo "new height".$new_height."<br/>"; //Its working fine till here.
$image_p = imagecreatetruecolor($new_width, $new_height);
$image = imagecreatefromjpeg($tmpName);
imagecopyresampled($image_p, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
echo "My image"."<br>";
echo '<img src="data:image/png|image/jpeg|image/gif;base64,' . base64_encode( $image_p ) . '" style="max-width:400px; max-height:300px;"/>';
/* This line is not able to display the image.
Also tried imagejpeg($image_p, null, 100);. Not working , but anyway i need to
display image alongwith other content so i have used echo. Not sure which
variable i should work with to display the image and how do i do it.*/
}
It seems to me that you are missing one step, encoding the image resource as a jpeg image (for example...).
You could output the result from something like imagejpeg to a file and just serve the file or you could capture its output using output buffering and serve it as you do now.
I have an image whose size is "300X367" .
I have an image function which crop thumbnail by using this type
but this function crop thumbnail of "41X50". I think it crop thumbnail by scale of original image.
But I want accurate thumbnail size of passing parameter. I can't put code here of image.php as the size is too big.
If anyone have solution for passing size parameter in image tag & crop thumbnail. please tell me.
Try this example code
<?php
function getFileExtenction($image)
{
$imageAry = explode(".", $image);
return $imageAry[1];
}
$image = 'images/imageName.png'; //Your image location
$imageType = getFileExtenction($image); //check the image file type
if ($imageType == "png")
$src = imagecreatefrompng($image);
else if ($imageType == "jpg")
$src = imagecreatefromjpeg($image);
else if ($imageType == "gif")
$src = imagecreatefromgif($image);
else
{
}
list($width, $height) = getimagesize($image); //To get the image width and height
$newwidth = 41; //Give your thumbanail image width
$newheight = 50; //Give your thubnail image height
$tmp = imagecreatetruecolor($newwidth, $newheight);
imagecopyresampled($tmp, $src, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
$filename = "NewImagename." . $imageType;
/*========== if you want to store this file in a folder Ex: "thumbs" ==========
$filename = "thumbs/NewImagename." . $imageType;
*/
imagejpeg($tmp, $filename, 100);
imagedestroy($src);
imagedestroy($tmp);
?>
In one of my applications, I'm using the code snippet below to copy uploaded images to a directory. It works fine but copying large images (> 2MB) takes more time than ideal and I really don't need images this big, so, I'm looking for a way to resize the images. How to achieve this using PHP?
<?php
$uploadDirectory = 'images/0001/';
$randomNumber = rand(0, 99999);
$filename = basename($_FILES['userfile']['name']);
$filePath = $uploadDirectory.md5($randomNumber.$filename);
// Check if the file was sent through HTTP POST.
if (is_uploaded_file($_FILES['userfile']['tmp_name']) == true) {
// Validate the file size, accept files under 5 MB (~5e+6 bytes).
if ($_FILES['userfile']['size'] <= 5000000) {
// Move the file to the path specified.
if (move_uploaded_file($_FILES['userfile']['tmp_name'], $filePath) == true) {
// ...
}
}
}
?>
Finally, I've discovered a way that fit my needs. The following snippet will resize an image to the specified width, automatically calculating the height in order to keep the proportion.
$image = $_FILES["image"]["tmp_name"];
$resizedDestination = $uploadDirectory.md5($randomNumber.$filename)."_RESIZED.jpg";
copy($_FILES, $resizedDestination);
$imageSize = getImageSize($image);
$imageWidth = $imageSize[0];
$imageHeight = $imageSize[1];
$DESIRED_WIDTH = 100;
$proportionalHeight = round(($DESIRED_WIDTH * $imageHeight) / $imageWidth);
$originalImage = imageCreateFromJPEG($image);
$resizedImage = imageCreateTrueColor($DESIRED_WIDTH, $proportionalHeight);
imageCopyResampled($images_fin, $originalImage, 0, 0, 0, 0, $DESIRED_WIDTH+1, $proportionalHeight+1, $imageWidth, $imageHeight);
imageJPEG($resizedImage, $resizedDestination);
imageDestroy($originalImage);
imageDestroy($resizedImage);
To anyone else seeking a complete example, create two files:
<!-- send.html -->
<html>
<head>
<title>Simple File Upload</title>
</head>
<body>
<center>
<div style="margin-top:50px; padding:20px; border:1px solid #CECECE;">
Select an image.
<br/>
<br/>
<form action="receive.php" enctype="multipart/form-data" method="post">
<input type="file" name="image" size="40">
<input type="submit" value="Send">
</form>
</div>
</center>
</body>
<?php
// receive.php
$randomNumber = rand(0, 99999);
$uploadDirectory = "images/";
$filename = basename($_FILES['file_contents']['name']);
$destination = $uploadDirectory.md5($randomNumber.$filename).".jpg";
echo "File path:".$filePath."<br/>";
if (is_uploaded_file($_FILES["image"]["tmp_name"]) == true) {
echo "File successfully received through HTTP POST.<br/>";
// Validate the file size, accept files under 5 MB (~5e+6 bytes).
if ($_FILES['image']['size'] <= 5000000) {
echo "File size: ".$_FILES["image"]["size"]." bytes.<br/>";
// Resize and save the image.
$image = $_FILES["image"]["tmp_name"];
$resizedDestination = $uploadDirectory.md5($randomNumber.$filename)."_RESIZED.jpg";
copy($_FILES, $resizedDestination);
$imageSize = getImageSize($image);
$imageWidth = $imageSize[0];
$imageHeight = $imageSize[1];
$DESIRED_WIDTH = 100;
$proportionalHeight = round(($DESIRED_WIDTH * $imageHeight) / $imageWidth);
$originalImage = imageCreateFromJPEG($image);
$resizedImage = imageCreateTrueColor($DESIRED_WIDTH, $proportionalHeight);
imageCopyResampled($images_fin, $originalImage, 0, 0, 0, 0, $DESIRED_WIDTH+1, $proportionalHeight+1, $imageWidth, $imageHeight);
imageJPEG($resizedImage, $resizedDestination);
imageDestroy($originalImage);
imageDestroy($resizedImage);
// Save the original image.
if (move_uploaded_file($_FILES['image']['tmp_name'], $destination) == true) {
echo "Copied the original file to the specified destination.<br/>";
}
}
}
?>
I made a small function to resize images, the function is below:
function resize_image($path, $width, $height, $update = false) {
$size = getimagesize($path);// [width, height, type index]
$types = array(1 => 'gif', 2 => 'jpeg', 3 => 'png');
if ( array_key_exists($size['2'], $types) ) {
$load = 'imagecreatefrom' . $types[$size['2']];
$save = 'image' . $types[$size['2']];
$image = $load($path);
$resized = imagecreatetruecolor($width, $height);
$transparent = imagecolorallocatealpha($resized, 0, 0, 0, 127);
imagesavealpha($resized, true);
imagefill($resized, 0, 0, $transparent);
imagecopyresampled($resized, $image, 0, 0, 0, 0, $width, $height, $size['0'], $size['1']);
imagedestroy($image);
return $save($resized, $update ? $path : null);
}
}
And here's how you use it:
if ( resize_image('dir/image.png', 50, 50, true) ) {// resize image.png to 50x50
echo 'image resized!';
}
there is 1 very simple image re-size function for all image types that keeps transparency and is very easy to use
check out :
https://github.com/Nimrod007/PHP_image_resize
hope this helps
ImageMagick is the fastest and probably the best way to resize images in PHP. Check out different examples here. This sample shows how to resize and image on upload.
Thanks to Mateus Nunes!
i edited his work a bit to get transparent pngs working:
$source = $_FILES["..."]["tmp_name"];
$destination = 'abc/def/ghi.png';
$maxsize = 45;
$size = getimagesize($source);
$width_orig = $size[0];
$height_orig = $size[1];
unset($size);
$height = $maxsize+1;
$width = $maxsize;
while($height > $maxsize){
$height = round($width*$height_orig/$width_orig);
$width = ($height > $maxsize)?--$width:$width;
}
unset($width_orig,$height_orig,$maxsize);
$images_orig = imagecreatefromstring( file_get_contents($source) );
$photoX = imagesx($images_orig);
$photoY = imagesy($images_orig);
$images_fin = imagecreatetruecolor($width,$height);
imagesavealpha($images_fin,true);
$trans_colour = imagecolorallocatealpha($images_fin,0,0,0,127);
imagefill($images_fin,0,0,$trans_colour);
unset($trans_colour);
ImageCopyResampled($images_fin,$images_orig,0,0,0,0,$width+1,$height+1,$photoX,$photoY);
unset($photoX,$photoY,$width,$height);
imagepng($images_fin,$destination);
unset($destination);
ImageDestroy($images_orig);
ImageDestroy($images_fin);
You could also use an x*y/width method for resizing and then calling imagecopyresampled() like is shown at http://www.virtualsecrets.com/upload-resize-image-php-mysql.html That page also puts images (after resizing) into mySQL via the PDO.