how can we deny the image if the image does not correspond to a predetermined size image (using mysql php).
if users upload images and press the submit button, only the images that match the given size will be saved, but only if the picture does not match the size of the specified image will be denied
In php you will get image size :
for uploaded image :
$image_info = getimagesize($_FILES["file_field_name"]["tmp_name"]);
$image_width = $image_info[0];
$image_height = $image_info[1];
or
list($width, $height) = getimagesize('uploaded path of image');
echo "width: " . $width . "<br />";
echo "height: " . $height;
Put your condition on image height,width for deny image upload.
You can use getimagesize function to achive this:
<?php
$predefined_width = "100";
$predefined_height = "150";
list($width, $height) = getimagesize("myimg.jpg");
$w = $width;
$h = $height;
// at the time of upload image just check this if condition:
if($w == $predefined_width && $h == $predefined_height) {
// image upload code
}
?>
Related
I am having a strange issue here on image update. After add a new product I need the option of update image and get this error while inserting it everything is ok.
getimagesize(2.png): failed to open stream: No such file or directory
Here is my code
$file = $request->image;
if (isset($file))
{
list($width, $height) = getimagesize($file);
$extension = $file->getClientOriginalExtension();
$final_filename = $file->getFilename() . '.' . $extension;
$new_height_75 = (75 * $height) / $width;
$thumb_img_75 = Image::make($file->getRealPath())->resize(75, $new_height_75);
$thumb_img_75->save(public_path('attachments/product_images/thumbs_75').'/'.$final_filename,80);
$new_height_250 = (250 * $height) / $width;
$thumb_img_250 = Image::make($file->getRealPath())->resize(250, $new_height_250);
$thumb_img_250->save(public_path('attachments/product_images/thumbs_250').'/'.$final_filename,80);
$new_height_150 = (150 * $height) / $width;
$thumb_img_150 = Image::make($file->getRealPath())->resize(150, $new_height_150);
$thumb_img_150->save(public_path('attachments/product_images/thumbs_150').'/'.$final_filename,80);
Storage::disk('product_images')->put($final_filename, File::get($file));
$product->image = $final_filename;
}
If i dd($file ); it gets the file I want to upload.
Thanks
why not you try laravel validator to validate image type as well as image file size https://laravel.com/docs/5.4/validation#rule-image
How can i resize proportionaly image in php without "squishing" ? I need some solution, i was searching here, but i could't find anything what i need.
What i have:
<?php
if (isset($_SESSION['username'])) {
if (isset($_POST['upload'])) {
$allowed_filetypes = array('.jpg', '.jpeg', '.png', '.gif');
$max_filesize = 10485760;
$upload_path = 'gallery/';
$filename = $_FILES['userfile']['name'];
$ext = substr($filename, strpos($filename, '.'), strlen($filename) - 1);
if (!in_array($ext, $allowed_filetypes)) {
die('The file you attempted to upload is not allowed.');
}
if (filesize($_FILES['userfile']['tmp_name']) > $max_filesize) {
die('The file you attempted to upload is too large.');
}
if (!is_writable($upload_path)) {
die('You cannot upload to the specified directory, please CHMOD it to 777.');
}
if (move_uploaded_file($_FILES['userfile']['tmp_name'], $upload_path.$filename)) {
$q = mysqli_query($connection, "UPDATE users SET avatar='".$_FILES['userfile']['name']."' WHERE username ='".$_SESSION['username']."'");
echo "<font color='#5cb85c'>Браво, успешно си качил/а профилна снимка!</font>";
} else {
echo 'There was an error during the file upload. Please try again.';
}
}
echo ' <form action="images.php" method="post" enctype="multipart/form-data"> ';
echo ' <input type="file" name="userfile"/>';
echo ' <input type="submit" name="upload" value="Качи">';
echo ' </form>';
} else {
echo "<font color='#ec3f8c'>Съжелявам! За да качиш снимка във профила си, <a href='login.php'><font color='#ec3f8c'><b> трябва да се логнеш</b> </font></a></font>";
}
?>
I want to add something like this:Click here
how i call images?
echo '<a href="profiles.php?id='.$rowtwo['id'].'">';
echo"<img src='gallery/".$rowtwo['avatar']."' width='170px' height='217px'/>";
echo'</a>';
I save my image of avatar in DB in users as avatar.
It's much easier to use JS. It also works better because you're letting the client do the slow work of manipulation vs using your finite server resources for that task.
Here's a sample:
//This is the URL to your original image
var linkUrl = "http://www.mywebsite.com/myimage.png";
//This is a div that is necessary to trick JS into letting you manipulate sizing
//Just make sure it exists and is hidden
var img = $('#HiddenDivForImg');
//This is a call to the function
image_GetResizedImage(img, linkUrl);
//This function does the magic
function image_GetResizedImage(img, linkUrl) {
//Set your max height or width dimension (either, not both)
var maxDim = 330;
//Define the equalizer to 1 to avoid errors if incorrect URL is given
var dimEq = 1;
//This determines if the larger dimension is the images height or width.
//Then, it divides that dimension by the maxDim to get a decimal number for size reduction
if (img.height() > maxDim || img.width() > maxDim) {
if (img.height() > img.width()) {
dimEq = maxDim / img.height();
} else {
dimEq = maxDim / img.width();
}
}
var imageOutput = "<a href='" + linkUrl + "' target='_blank'>View Larger</a><br /><a href='" + result +
"' target='_blank'><img src='" + linkUrl + "' style='width: " + img.width() * dimEq
+ "px; height: " + img.height() * dimEq + "px' /></a>";
//This returns a URL for the image with height and width tags of the resized (non-squished) image.
return imageOutput;
}
For image manipulation in PHP you can use Imagemagick.
http://www.imagemagick.org/
It's the scale command you are looking for.
Here I have created a function with your reference link, you can use it like this
Call it
//Resize uploaded image
resize_image($_FILES['userfile'], 100, 200);
//Or if you want to save image with diffrent name
$filename = $upload_path.$_SESSION['username'].'-avatar.jpg';
resize_image($_FILES['userfile'], 100, 200, $newfilename);
//if (move_uploaded_file($_FILES['userfile']['tmp_name'], $upload_path.$filename)) {
$q = mysqli_query($connection, "UPDATE users SET avatar='".$filename."' WHERE username ='".$_SESSION['username']."'");
echo "<font color='#5cb85c'>Браво, успешно си качил/а профилна снимка!</font>";
} else {
echo 'There was an error during the file upload. Please try again.';
}
Function
function resize_image($image_src, $w = 100, $h = 100, $save_as = null) {
// Create image from file
switch(strtolower($image_src['type']))
{
case 'image/jpeg':
$image = imagecreatefromjpeg($image_src['tmp_name']);
break;
case 'image/png':
$image = imagecreatefrompng($image_src['tmp_name']);
break;
case 'image/gif':
$image = imagecreatefromgif($image_src['tmp_name']);
break;
default:
exit('Unsupported type: '.$image_src['type']);
}
// Target dimensions
$max_width = $w;
$max_height = $h;
// Get current dimensions
$old_width = imagesx($image);
$old_height = imagesy($image);
// Calculate the scaling we need to do to fit the image inside our frame
$scale = min($max_width/$old_width, $max_height/$old_height);
// Get the new dimensions
$new_width = ceil($scale*$old_width);
$new_height = ceil($scale*$old_height);
// Create new empty image
$new = imagecreatetruecolor($new_width, $new_height);
// Resize old image into new
imagecopyresampled($new, $image,
0, 0, 0, 0,
$new_width, $new_height, $old_width, $old_height);
if($save_as) {
//Save as new file
imagejpeg($new, $save_as, 90);
}else{
//Overwrite image
imagejpeg($new, $image_src['tmp_name'], 90);
}
// Destroy resources
imagedestroy($image);
imagedestroy($new);
}
I use http://image.intervention.io/. You can scale, cache, store, convert and do various image manipulation tasks.
Very easy to use.
// load the image
$img = Image::make('public/foo.jpg');
// resize the width of the image to 300 pixels and constrain proportions.
$img->resize(300, null, true);
// save file as png with 60% quality
$img->save('public/bar.png', 60);
Idea
I have a function that checks to see if a thumbnail exists in cache folder for a particular image. If it does, it returns the path to that thumbnail. If it does not, it goes ahead and generates the thumbnail for the image, saves it in the cache folder and returns the path to it instead.
Problem
Let's say I have 10 images but only 7 of them have their thumbnails in the cache folder. Therefore, the function goes to generation of thumbnails for the rest 3 images. But while it does that, all I see is a blank, white loading page. The idea is to display the thumbnails that are already generated and then generate the ones that do not exist.
Code
$images = array(
"http://i49.tinypic.com/4t9a9w.jpg",
"http://i.imgur.com/p2S1n.jpg",
"http://i49.tinypic.com/l9tow.jpg",
"http://i45.tinypic.com/10di4q1.jpg",
"http://i.imgur.com/PnefW.jpg",
"http://i.imgur.com/EqakI.jpg",
"http://i46.tinypic.com/102tl09.jpg",
"http://i47.tinypic.com/2rnx6ic.jpg",
"http://i50.tinypic.com/2ykc2gn.jpg",
"http://i50.tinypic.com/2eewr3p.jpg"
);
function get_name($source) {
$name = explode("/", $source);
$name = end($name);
return $name;
}
function get_thumbnail($image) {
$image_name = get_name($image);
if(file_exists("cache/{$image_name}")) {
return "cache/{$image_name}";
} else {
list($width, $height) = getimagesize($image);
$thumb = imagecreatefromjpeg($image);
if($width > $height) {
$y = 0;
$x = ($width - $height) / 2;
$smallest_side = $height;
} else {
$x = 0;
$y = ($height - $width) / 2;
$smallest_side = $width;
}
$thumb_size = 200;
$thumb_image = imagecreatetruecolor($thumb_size, $thumb_size);
imagecopyresampled($thumb_image, $thumb, 0, 0, $x, $y, $thumb_size, $thumb_size, $smallest_side, $smallest_side);
imagejpeg($thumb_image, "cache/{$image_name}");
return "cache/{$image_name}";
}
}
foreach($images as $image) {
echo "<img src='" . get_thumbnail($image) . "' />";
}
To elaborate on #DCoder's comment, what you could do is;
If the thumb exists in the cache, return the URL just as you do now. This will make sure that thumbs that are in the cache will load quickly.
If the thumb does not exist in the cache, return an URL similar to /cache/generatethumb.php?http://i49.tinypic.com/4t9a9w.jpg where the script generatethumb.php generates the thumbnail, saves it in the cache and returns the thumbnail. Next time, it will be in the cache and the URL won't go through the PHP script.
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
php resizing image on upload rotates the image when i don't want it to
I have created my first ever upload code and was testing it, the image resizes and uploads fine. The only issue I have is that it rotates.
Here is the code:
$errors = array();
$message = "";
if(isset($_POST["test"])){
$name = rand(1,999999) . $_FILES["uploadfile"]["name"];
$temp_name = $_FILES["uploadfile"]["tmp_name"];
$size = $_FILES["uploadfile"]["size"];
$extension = strtolower(end(explode('.', $_FILES['uploadfile']['name'])));
$path = "testupload/" . $name;
$info = getimagesize($temp_name);
$originalwidth = $info[0];
$originalheight = $info[1];
$mime = $info["mime"];
$acceptedHeight = 750;
$acceptedWidth = 0;
$acceptedMimes = array('image/jpeg','image/png','image/gif');
$acceptedfileSize = 4102314;
$acceptedExtensions = array('jpg','jpeg','gif','png');
echo $size;
// check mimetype
if(!in_array($mime, $acceptedMimes)){$errors[] = "mime type not allowed - The file you have just uploaded was a: " . $extension . " file!";}
if(!$errors){if($size > $acceptedfileSize){$errors[] = "filesize is to big - Your file size of this file is: " . $size;}}
if(!$errors){if(!in_array($extension, $acceptedExtensions)){$errors[] = "File extension not allowed - The file you have just uploaded was a: " . $extension . " file!";}}
if(!$errors){
// create the image from the temp file.
if ($extension === 'png'){
$orig = imagecreatefrompng($temp_name);
}elseif ($extension === 'jpeg'){
$orig = imagecreatefromjpeg($temp_name);
}elseif ($extension === 'jpg'){
$orig = imagecreatefromjpeg($temp_name);
}elseif ($extension === 'gif'){
$orig = imagecreatefromgif($temp_name);
}
// work out the new dimensions.
if ($acceptedHeight === 0){
$newWidth = $acceptedWidth;
$newHeight = ($originalheight / $originalwidth) * $acceptedWidth;
}else if ($acceptedWidth === 0){
$newWidth = ($originalwidth / $originalheight) * $acceptedHeight;
$newHeight = $acceptedHeight;
}else{
$newWidth = $acceptedWidth;
$newHeight = $acceptedHeight;
}
$originalwidth = imagesx($orig);
$originalheight = imagesy($orig);
// make ssure they are valid.
if ($newWidth < 1){ $newWidth = 1; }else{ $newWidth = round($newWidth ); }
if ($newHeight < 1){ $newHeight = 1; }else{ $newHeight = round($newHeight); }
// don't bother copying the image if its alreay the right size.
if ($originalwidth!== $newWidth || $originalheight !== $newHeight){
// create a new image and copy the origional on to it at the new size.
$new = imagecreatetruecolor($newWidth, $newHeight);
imagecopyresampled($new, $orig, 0,0,0,0, $newWidth, $newHeight, $originalwidth, $originalheight);
}else{
// phps copy on write means this won't cause any harm.
$new = $orig;
}
// save the image.
if ($extension === 'jpeg' || $extension === 'jpg'){
imagejpeg($new, $path, 100);
}else if ($save_ext === 'gif'){
imagegif($new, $path);
}else{
imagepng($new, $path, round(9 - (100 / (100 / 9))));
}
$message = $path;
Can someone please let me know what is going on?
Check the original image is actually in the orientation you expect. I work with images all day and the majority of the time it's Windows Photo Viewer showing the image in a certain orientation (reading an orientation change in the EXIF) but if you open it up in Photoshop it's different.
I tested your code with two images: one was landscape (width > height), the other was portrait (height > width). The code works.
The problem seems to be what #Tavocado said: newer cameras have a sensor to detect the orientation of the camera when the photo was taken, and they store that info in the photo. Also, newer photo viewing software reads that info back from the photo and rotates it before displaying the image. So you all the time see the image with the right orientation (sky up, earth down). However PHP functions (and the rest of the world) don't use that information and display the image as is was taken. That means that you will have to rotate yourself portrait images.
Just load your images in the browser (drag the file on the address bar) you you will see how the image is really stored in the file, without any automatic rotation.
The problem is that the image has embedded EXIF data, probably from the device that took the photo.
Investigate whether your images have embedded rotation information, using exif_read_data, and then auto-correct the rotation with a function like this.
I have the following script (it looks long, but well commented). Problem is, i get errors when i try to upload a png or gif image. What can i do to adjust this (easy if possible) so that it can either work with png's and gif's or convert them before trying to work with them.
This is the error that i recieve
Warning: imagecreatefromjpeg() [function.imagecreatefromjpeg]: gd-jpeg: JPEG library reports unrecoverable error
Aparently the first part of the script is working, saving the original upload, but how should i go about this?
$idir = "images/"; // Path To Images Directory
$tdir = "images/"; // Path To Thumbnails Directory
$twidth = "125"; // Maximum Width For Thumbnail Images
$theight = "100"; // Maximum Height For Thumbnail Images
$url = $_FILES['imagefile']['name']; // Set $url To Equal The Filename For Later Use
if ($_FILES['imagefile']['type'] == "image/jpg" || $_FILES['imagefile']['type'] == "image/jpeg" || $_FILES['imagefile']['type'] == "image/pjpeg" || $_FILES['imagefile']['type'] == "image/png" || $_FILES['imagefile']['type'] == "image/gif") {
$file_ext = strrchr($_FILES['imagefile']['name'], '.'); // Get The File Extention In The Format Of , For Instance, .jpg, .gif or .php
$fdate = date( 'ssU' );
$copy = copy($_FILES['imagefile']['tmp_name'], "$idir" . $fdate . "$file_ext"); // Move Image From Temporary Location To Permanent Location
if ($copy) { // If The Script Was Able To Copy The Image To It's Permanent Location
print 'Image uploaded successfully.<br />'; // Was Able To Successfully Upload Image
$simg = imagecreatefromjpeg("$idir" . "$fdate" . "$file_ext"); // Make A New Temporary Image To Create The Thumbanil From
$currwidth = imagesx($simg); // Current Image Width
$currheight = imagesy($simg); // Current Image Height
if ($currheight > $currwidth) { // If Height Is Greater Than Width
$zoom = $twidth / $currheight; // Length Ratio For Width
$newheight = $theight; // Height Is Equal To Max Height
$newwidth = $currwidth * $zoom; // Creates The New Width
} else { // Otherwise, Assume Width Is Greater Than Height (Will Produce Same Result If Width Is Equal To Height)
$zoom = $twidth / $currwidth; // Length Ratio For Height
$newwidth = $twidth; // Width Is Equal To Max Width
$newheight = $currheight * $zoom; // Creates The New Height
}
$dimg = imagecreate($newwidth, $newheight); // Make New Image For Thumbnail
imagetruecolortopalette($simg, false, 256); // Create New Color Pallete
$palsize = ImageColorsTotal($simg);
for ($i = 0; $i < $palsize; $i++) { // Counting Colors In The Image
$colors = ImageColorsForIndex($simg, $i); // Number Of Colors Used
ImageColorAllocate($dimg, $colors['red'], $colors['green'], $colors['blue']); // Tell The Server What Colors This Image Will Use
}
imagecopyresized($dimg, $simg, 0, 0, 0, 0, $newwidth, $newheight, $currwidth, $currheight); // Copy Resized Image To The New Image (So We Can Save It)
$fdate = date( 'ssU' );
imagejpeg($dimg, "$tdir" . "thumb_" . $fdate . "$file_ext"); // Saving The Image
$full = "$fdate" . "$file_ext";
$thumb = "thumb_" . $fdate . "$file_ext";
imagedestroy($simg); // Destroying The Temporary Image
imagedestroy($dimg); // Destroying The Other Temporary Image
print 'Image thumbnail created successfully.'; // Resize successful
} else {
print '<font color="#FF0000">ERROR: Unable to upload image.</font>'; // Error Message If Upload Failed
}
} else {
print '<font color="#FF0000">ERROR: Wrong filetype (has to be a .jpg or .jpeg. Yours is '; // Error Message If Filetype Is Wrong
print $file_ext; // Show The Invalid File's Extention
print '.</font>';
}
Any guidance here is greatly appreciated.
Well, imagecreatefromjpeg() can only create images from... jpegs. There are sister functions for creating images from other file types, namely imagecreatefrompng() and imagecreatefromgif().
I've added to your code. Give it a try. Make sure you see the changes, as I put a die() in there in case of an invalid image, which may not be what you want:
$url = $_FILES['imagefile']['name']; // Set $url To Equal The Filename For Later Use
if ($_FILES['imagefile']['type'] == "image/jpg" || $_FILES['imagefile']['type'] == "image/jpeg" || $_FILES['imagefile']['type'] == "image/pjpeg" || $_FILES['imagefile']['type'] == "image/png" || $_FILES['imagefile']['type'] == "image/gif") {
$file_ext = strrchr($_FILES['imagefile']['name'], '.'); // Get The File Extention In The Format Of , For Instance, .jpg, .gif or .php
$fdate = date( 'ssU' );
$copy = copy($_FILES['imagefile']['tmp_name'], "$idir" . $fdate . "$file_ext"); // Move Image From Temporary Location To Permanent Location
if ($copy) { // If The Script Was Able To Copy The Image To It's Permanent Location
print 'Image uploaded successfully.<br />'; // Was Able To Successfully Upload Image
$cfunction = 'imagecreatefromjpeg';
if ($_FILES['imagefile']['type'] == "image/png") {
$cfunction = 'imagecreatefrompng';
} else if ($_FILES['imagefile']['type'] == "image/gif") {
$cfunction = 'imagecreatefromgif';
} else {
die("Invalid image format.");
}
$simg = $cfunction("$idir" . "$fdate" . "$file_ext"); // Make A New Temporary Image To Create The Thumbanil From
$currwidth = imagesx($simg); // Current Image Width
$currheight = imagesy($simg); // Current Image Height
if ($currheight > $currwidth) { // If Height Is Greater Than Width
$zoom = $twidth / $currheight; // Length Ratio For Width
$newheight = $theight; // Height Is Equal To Max Height
$newwidth = $currwidth * $zoom; // Creates The New Width
} else { // Otherwise, Assume Width Is Greater Than Height (Will Produce Same Result If Width Is Equal To Height)
$zoom = $twidth / $currwidth; // Length Ratio For Height
$newwidth = $twidth; // Width Is Equal To Max Width
$newheight = $currheight * $zoom; // Creates The New Height
}
$dimg = imagecreate($newwidth, $newheight); // Make New Image For Thumbnail
imagetruecolortopalette($simg, false, 256); // Create New Color Pallete
$palsize = ImageColorsTotal($simg);
for ($i = 0; $i < $palsize; $i++) { // Counting Colors In The Image
$colors = ImageColorsForIndex($simg, $i); // Number Of Colors Used
ImageColorAllocate($dimg, $colors['red'], $colors['green'], $colors['blue']); // Tell The Server What Colors This Image Will Use
}
imagecopyresized($dimg, $simg, 0, 0, 0, 0, $newwidth, $newheight, $currwidth, $currheight); // Copy Resized Image To The New Image (So We Can Save It)
$fdate = date( 'ssU' );
imagejpeg($dimg, "$tdir" . "thumb_" . $fdate . "$file_ext"); // Saving The Image
$full = "$fdate" . "$file_ext";
$thumb = "thumb_" . $fdate . "$file_ext";
imagedestroy($simg); // Destroying The Temporary Image
imagedestroy($dimg); // Destroying The Other Temporary Image
print 'Image thumbnail created successfully.'; // Resize successful
} else {
print '<font color="#FF0000">ERROR: Unable to upload image.</font>'; // Error Message If Upload Failed
}
} else {
print '<font color="#FF0000">ERROR: Wrong filetype (has to be a .jpg or .jpeg. Yours is '; // Error Message If Filetype Is Wrong
print $file_ext; // Show The Invalid File's Extention
print '.</font>';
}