PHP Bilder beschneiden

Morgen ,
auf der PHP.net Seite ist doch ein Beispiel.
Nur das du nicht mit Prozent arbeitetest sondern mit Pixelen.

PHP-Code:

<?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);
?>

Morgen, da wird das Bild aber verkleinert, oder ?

Das proportionale Verkleinern geht ja schon, wie geschrieben, nur möchte ich jetzt den Rest abschneiden, damit die Höhe auch einheitlich ist, ohne das sich was verzerrt

PHP-Code:

<?php
/*
USAGE EXAMPLE:
File: createthumb.php
Example: <img src="createthumb.php?filename=photo.jpg&amp;width=100&amp;height=100">
*/
//    error_reporting(E_ALL);

if (preg_match("/.jpg$|.jpeg$/i", $_GET['filename'])) header('Content-type: image/jpeg');
if (preg_match("/.gif$/i", $_GET['filename'])) header('Content-type: image/gif');
if (preg_match("/.png$/i", $_GET['filename'])) header('Content-type: image/png');

    // Display error image if file isn't found
    if (!is_file($_GET['filename'])) {
        header('Content-type: image/jpeg');
        $errorimage = ImageCreateFromJPEG('images/questionmark.jpg');
        ImageJPEG($errorimage,null,90);
    }
    
    // Display error image if file exists, but can't be opened
    if (substr(decoct(fileperms($_GET['filename'])), -1, strlen(fileperms($_GET['filename']))) < 4 OR substr(decoct(fileperms($_GET['filename'])), -3,1) < 4) {
        header('Content-type: image/jpeg');
        $errorimage = ImageCreateFromJPEG('images/cannotopen.jpg');
        ImageJPEG($errorimage,null,90);
    }
    
    // Define variables
    $target = "";
    $xoord = 0;
    $yoord = 0;

    if ($_GET['size'] == "") $_GET['size'] = 120; //
       $imgsize = GetImageSize($_GET['filename']);
       $width = $imgsize[0];
       $height = $imgsize[1];
      if ($width > $height) { // If the width is greater than the height it’s a horizontal picture
        $xoord = ceil(($width-$height)/2);
        $width = $height;      // Then we read a square frame that  equals the width
      } else {
        $yoord = ceil(($height-$width)/2);
        $height = $width;
      }

    // Rotate JPG pictures
    if (preg_match("/.jpg$|.jpeg$/i", $_GET['filename'])) {
        if (function_exists('exif_read_data') && function_exists('imagerotate')) {
            $exif = exif_read_data($_GET['filename']);
            $ort = $exif['IFD0']['Orientation'];
            $degrees = 0;
            switch($ort)
            {
                case 6: // 90 rotate right
                    $degrees = 270;
                break;
                case 8:    // 90 rotate left
                    $degrees = 90;
                break;
            }
            if ($degrees != 0)    $target = imagerotate($target, $degrees, 0);
        }
    }
    
         $target = ImageCreatetruecolor($_GET['size'],$_GET['size']);
         if (preg_match("/.jpg$/i", $_GET['filename'])) $source = ImageCreateFromJPEG($_GET['filename']);
         if (preg_match("/.gif$/i", $_GET['filename'])) $source = ImageCreateFromGIF($_GET['filename']);
         if (preg_match("/.png$/i", $_GET['filename'])) $source = ImageCreateFromPNG($_GET['filename']);
         imagecopyresampled($target,$source,0,0,$xoord,$yoord,$_GET['size'],$_GET['size'],$width,$height);
         imagedestroy($source);

         if (preg_match("/.jpg$/i", $_GET['filename'])) ImageJPEG($target,null,90);
         if (preg_match("/.gif$/i", $_GET['filename'])) ImageGIF($target,null,90);
         if (preg_match("/.png$/i", $_GET['filename'])) ImageJPEG($target,null,90); // Using ImageJPEG on purpose
         imagedestroy($target);



?>