I used the code below to get an image:
$url = "http://maps.googleapis.com/maps/api/staticmap?size=800x600&zoom=12¢er=(10.763705518561297,106.64444580078126)";
$content = file_get_contents($url);
I received a 640px x 640px image meanwhile I expected a 800px x 600px one. How do I scale that image to 800px x 600px?
Try doing this:
<?php
// File and new size
$filename = 'test.jpg';
$percent = 0.5;
// Content type
header('Content-Type: image/jpeg');
// Get new sizes
list($width, $height) = getimagesize($filename);
$newwidth = $width * $percent;
$newheight = $height * $percent;
// Load
$thumb = imagecreatetruecolor($newwidth, $newheight);
$source = imagecreatefromjpeg($filename);
// Resize
imagecopyresized($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
// Output
imagejpeg($thumb);
?>
Here, rescaling is done by 50%, you can change parameter as per your requirement. You can even use Imagick for image manipulation. See, if that helps.
Referred: PHP Manual
Related
I found the following script from PHP site to half the size of the image. I use the database to fetch the link of the image. Other things are working correctly which means there isn't any kind of error anywhere except this one.
echo "<img src='".// File and new size
$filename = '$row["image"]';
$percent = 0.5;
// Content type
header('Content-Type: image/jpeg');
// Get new sizes
list($width, $height) = getimagesize($filename);
$newwidth = $width * $percent;
$newheight = $height * $percent;
// Load
$thumb = imagecreatetruecolor($newwidth, $newheight);
$source = imagecreatefromjpeg($filename);
// Resize
imagecopyresized($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
// Output
imagejpeg($thumb);
"'>"
Error:
The whole page is destroyed and there is a broken link of an image.
Hope you guys will help me!
It works after you drop those lines:
echo "<img src='".// File and new size
"'>"
header does it for you, informs that there is jpg coming, no need to echo image tag.
The other solution is to remove this line:
header('Content-Type: image/jpeg');
And create new file, then use it as a source of an image:
// Output
$new_filename = 'new_image.jpg';
imagejpeg($thumb,$new_filename);//saves new image to a file, instead of outputting it to the screen
echo "<img src='$new_filename'>";
Try this it works
<?php
$filename = '$row["image"]';
$percent = 0.5;
// Content type
header('Content-Type: image/jpeg');
// Get new sizes
list($width, $height) = getimagesize($filename);
$newwidth = $width * $percent;
$newheight = $height * $percent;
// Load
$thumb = imagecreatetruecolor($newwidth, $newheight);
$source = imagecreatefromjpeg($filename);
// Resize
imagecopyresized($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
// Output
echo "<img src='".imagejpeg($thumb)."'>";
?>
I am going to grab some images from different websites and resize and the download them. I am using the following script:
$img = file_get_contents($picarr[0]);
$im = imagecreatefromstring($img);
$width = imagesx($im);
$height = imagesy($im);
if($width > $height){
$newwidth = 600;
$newheight = (600*$height)/$width;
}else{
$newheight = 400;
$newwidth = (400*$width)/$height;
}
$thumb = imagecreatetruecolor($newwidth, $newheight);
imagecopyresampled($thumb, $im, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
imagejpeg($thumb,'D:\mypic\9.jpg', 100); //save image as jpg
imagedestroy($thumb);
imagedestroy($im);
this code is worked, but it seems it's following the original photo's scale (which is 4:3, and the size of original picture is 720 x 540). So the output is 600 x 450. How can I or is it possible to force resize the image to 600 x 400 ?
EDIT: Also, I am trying to add some watermark on the image.I know the way to add watermark when I submit the form, but how can I do this while running this script
Index.php
<?php
error_reporting(E_ALL);
// File and new size
//the original image has 800x600
$filename = 'images/lazy1.jpg';
//the resize will be a percent of the original size
$percent = 0.5;
// Content type
header('Content-Type: image/jpg');
// Get new sizes
list($width, $height) = getimagesize($filename);
$newwidth = $width * $percent;
$newheight = $height * $percent;
// Load
$thumb = imagecreatetruecolor($newwidth, $newheight);
$source = imagecreatefromjpeg($filename);
// Resize
imagecopyresized($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
// Output and free memory
//the resized image will be 400x300
imagejpeg($thumb, "raj.jpg", 100);
imagedestroy($thumb);
echo "Image Resize Successfully";
?>
I am using imagejpeg() to save file. i want save file in folder but not show on browser. in browser only show this message "Image Resize successfully".
<?php
error_reporting(E_ALL);
// File and new size
//the original image has 800x600
$filename = 'images/lazy1.jpg';
//the resize will be a percent of the original size
$percent = 0.5;
//Removed lines here
// Get new sizes
list($width, $height) = getimagesize($filename);
$newwidth = $width * $percent;
$newheight = $height * $percent;
// Load
$thumb = imagecreatetruecolor($newwidth, $newheight);
$source = imagecreatefromjpeg($filename);
// Resize
imagecopyresized($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
// Output and free memory
//the resized image will be 400x300
imagejpeg($thumb, "raj.jpg", 100);
imagedestroy($thumb);
echo "Image Resize Successfully";
?>
I am using the simple image resize methode
list($width, $height) = getimagesize($filename);
$new_width = $width * $percent;
$new_height = $height * $percent;
$image_p = imagecreatetruecolor($new_width, $new_height);
$image = imagecreatefromjpeg($filename);
imagecopyresampled($image_p, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagejpeg($image_p, null, 100);
Eventhoug i had given the quality to maximum , when it comes to smaller image size , the generated image is of very poor quality (original 500px to new 100px ).
Is there any other way to increase the image quality ?
Yes there is a way to increase the quality: use ImageMagick instead of the GD library, if possible. The quality of the GD library is pretty poor.
try this
<?php
header('Content-type: image/jpeg');
$image = new Imagick('image.jpg');
// If 0 is provided as a width or height parameter,
// aspect ratio is maintained
$image->thumbnailImage(100, 0);
echo $image;
?>
source http://php.net/manual/en/imagick.examples-1.php
i want to resize uploaded images to width: 180px with proportional height. Is there any classes to do this?
Thanks for help!
I think this question can use an answer with an actual code example. The code below shows you how you to resize an image inside a directory uploaded, and save the resized image in the folder resized.
<?php
// the file
$filename = 'uploaded/my_image.jpg';
// the desired width of the image
$width = 180;
// content type
header('Content-Type: image/jpeg');
list($width_orig, $height_orig) = getimagesize($filename);
$ratio_orig = $width_orig/$height_orig;
$height = $width/$ratio_orig;
// resample
$image_p = imagecreatetruecolor($width, $height);
$image = imagecreatefromjpeg($filename);
imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig);
// output
imagejpeg($image_p, 'resized/my_image.jpg', 80);
?>
First you need to get the current image dimensions:
$width = imagesx($image);
$height = imagesy($image);
Then calculate the scaling factor:
$scalingFactor = $newImageWidth / $width;
When having the scaling factor just calculate the new height of the image:
$newImageHeight = $height * $scalingFactor;
Then just create the new image;
$newImage = imagecreatetruecolor($newImageWidth, $newImageHeight);
imagecopyresampled($newImage, $image, 0, 0, 0, 0, $newImageWidth, $newImageHeight, $width, $height);
Probably these snippets will help:
http://www.codeslices.net/snippets/resize-scale-image-proportionally-to-given-width-in-php http://www.codeslices.net/snippets/resize-scale-image-proportionally-in-php
at least they worked for me.
you may use imagecopyresampled php function. new sizes you also can calculate.
User jquery plugin JCrop, and set its aspect ratio for the image...
Check this link for details:
http://www.webresourcesdepot.com/jquery-image-crop-plugin-jcrop/