PHP Upload and Resize Image

php resize image on upload

You can use this library to manipulate the image while uploading. http://www.verot.net/php_class_upload.htm

PHP upload and resize image

You can use the PHP GD library to resize an image on upload.

The following code should give you an idea of how to implement the resize:

// Get the image info from the photo
$image_info = getimagesize($photo);
$width = $new_width = $image_info[0];
$height = $new_height = $image_info[1];
$type = $image_info[2];

// Load the image
switch ($type)
{
    case IMAGETYPE_JPEG:
        $image = imagecreatefromjpeg($photo);
        break;
    case IMAGETYPE_GIF:
        $image = imagecreatefromgif($photo);
        break;
    case IMAGETYPE_PNG:
        $image = imagecreatefrompng($photo);
        break;
    default:
        die('Error loading '.$photo.' - File type '.$type.' not supported');
}

// Create a new, resized image
$new_width = 180;
$new_height = $height / ($width / $new_width);
$new_image = imagecreatetruecolor($new_width, $new_height);
imagecopyresampled($new_image, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);

// Save the new image over the top of the original photo
switch ($type)
{
    case IMAGETYPE_JPEG:
        imagejpeg($new_image, $photo, 100);
        break;
    case IMAGETYPE_GIF:
        imagegif($new_image, $photo);         
        break;
    case IMAGETYPE_PNG:
        imagepng($new_image, $photo);
        break;
    default:
        die('Error saving image: '.$photo);
}

Resize image on upload php

See this answer, I like myself using imagemagick

Resize, rename and upload image with PHP

You are creating a image, then moving the uploaded file, which is why it's creating two files. I believe your code is supposed to be:

$file_name = $_FILES['HOT_Logo']['name'];
$file_tmp_name = $_FILES['HOT_Logo']['tmp_name'];
$file_target = '../../images/hotel-logos/';
$file_size = $_FILES['HOT_Logo']['size'];

// Resize
$ratio = $width/$height;
if($ratio > 1) {
    $new_width = 300;
    $new_height = 300/$ratio;
}
else {
    $new_width = 300*$ratio;
    $new_height = 300;
}

// Rename file
$temp = explode('.', $file_name);
$newfilename = 'new_img_name.'.end($temp);

// Upload image
if(move_uploaded_file($file_tmp_name , $file_target.$newfilename)) {
    $src = imagecreatefromstring(file_get_contents($file_target.$newfilename));
    $dst = imagecreatetruecolor($new_width, $new_height);
    imagecopyresampled($dst, $src, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
    imagedestroy($src);
    imagepng($dst, $file_target.$newfilename);
    imagedestroy($dst);

    ....
}

resize image on upload with verot class.upload.php

You need install the GD lib... Example if you are using ubuntu:

sudo apt-get install php5-gd

Then restart the Apache

sudo /etc/init.d/apache2 restart

Anyway, I use this to resize images I use this:

To upload:

   $uploaded_filename = '/www/html/picts/yourfoto.jpg';
   if(isset($_FILES['your_files_field_name'])){
        if (move_uploaded_file($_FILES['your_files_field_name']['tmp_name'], $uploaded_filename)) {
             chmod($uploaded_filename, 0755); 
             return $nome; // OK
         } else {
             return "ERROR"; 
         }
    }

To Resize:

<?php

    $w = 40; // set width
    $h = 40; // set height
    $path = './'; // path

$image_file = (string) filter_input(INPUT_GET, 'img');
$image_path = $path . $image_file;
$img = null;
$ext = @strtolower(end(explode('.', $image_path)));

if ($ext == 'jpeg') {
    $img = imagecreatefromjpeg($image_path);
} else if ($ext == 'jpg') {
    $img = imagecreatefromjpeg($image_path);
} else if ($ext == 'png') {
    $img = imagecreatefrompng($image_path);
} elseif ($ext == 'gif') {
    $img = imagecreatefromgif($image_path);
} elseif ($ext == 'bmp') {
    $img = imagecreatefromwbmp($image_path);
} else {
    exit("File type not found: " . $ext);
}

if ($img) {
    $width = imagesx($img);
    $height = imagesy($img);
    $scale = min($w / $width, $h / $height);

    if ($scale < 1) {
        $new_width = floor($scale * $width);
        $new_height = floor($scale * $height);
        $tmp_img = imagecreatetruecolor($new_width, $new_height);
        imagecopyresampled($tmp_img, $img, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
        imagedestroy($img);
        $img = $tmp_img;
    }
}

if (!$img) {
    $img = imagecreate($w, $h);
    imagecolorallocate($img, 204, 204, 204);
    $c = imagecolorallocate($img, 153, 153, 153);
    $c1 = imagecolorallocate($img, 0, 0, 0);
    imageline($img, 0, 0, $w, $h, $c);
    imageline($img, $w, 0, 0, $h, $c);
    imagestring($img, 2, 12, 55, 'IMAGE ERROR', $c1);
}

header('Content-type: ' . 'image/png');
imagejpeg($img);

If you want to save the resized file in disk:

$file = '/www/html/picts/yourfoto.jpg';
$save = imagejpeg($img, $file); // save the file

I hope this help!

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