图像处理 - 上传/调整大小/创建拇指并保存

Question

我正在寻求帮助。 我有以下代码上传图像并创建缩略图并将它们存储在适当的文件夹中......但我的问题是空间......上传的主图像是巨大的 4320 x 3240 并且该网站需要很长时间才能加载...... 我只想要 2 张图像：主图像最大宽度 1024，缩略图最大宽度 100....

更新：现在可以调整主图像的大小并创建缩略图，但仅适用于

到目前为止，这是我的代码：

    <?php ob_start();
session_start(); 
include("../../config.php");
ini_set("memory_limit", "500M");
$folder = "../images/stock/".$_SESSION['info_id']."";
$thumbs =$folder.'/thumbs/';
if(!file_exists($folder)){
    mkdir ($folder,0777);
    $uploadfolder = $folder."/";
    //echo $folder.'<br>';
    }
    else
    {
        //echo 'folder already created<br>';
        $uploadfolder = $folder."/";
        //echo $folder.'<br>';
    }

if(!file_exists($thumbs)){
    mkdir($thumbs,0777);
    $thumbnailfolder = $thumbs ;
    //echo $thumbs.'<br>';
}else{
    $thumbnailfolder = $thumbs ;
    //echo $thumbnailfolder.'<br>';

}

$allowedfiletypes = array("jpeg","jpg");
//$uploadfolder = $s;
$thumbnailheight = 100; //in pixels
$imagesresizeheight = 500;

$action = $_POST['action'];
if ($action == "upload") {
    //$_SESSION['result'] = "Uploading image... " ;

    if(empty($_FILES['uploadimage']['name'])){
        $_SESSION['result'] = "<strong>Error: File not uploaded 1!</strong><br>" ;
    } else {
            $uploadfilename = $_FILES['uploadimage']['name'];
        $fileext = strtolower(substr($uploadfilename,strrpos($uploadfilename,".")+1));
        if (!in_array($fileext,$allowedfiletypes)) { $_SESSION['result'] = "<strong>Error: Invalid file extension!</strong><br>" ; }
        else {

            $fulluploadfilename = $uploadfolder.$uploadfilename ;
            if (move_uploaded_file($_FILES['uploadimage']['tmp_name'], $fulluploadfilename)) {
                $im = imagecreatefromjpeg($fulluploadfilename);
                if (!$im) { $_SESSION['result'] = "<p><strong>Error: Couldn't Resize Image!</strong><br>" ; }
                else {

                    ////  Resize Image Creation //////
                    $imw = imagesx($im); // uploaded image width
                    $imh = imagesy($im); // uploaded image height
                    $nh = $imagesresizeheight; // thumbnail height
                    $nw = round(($nh / $imh) * $imw); //thumnail width
                    $newim = imagecreatetruecolor ($nw, $nh);
                    imagecopyresampled ($newim,$im, 0, 0, 0, 0, $nw, $nh, $imw, $imh) ;
                    $imagefilename = $uploadfolder.$uploadfilename ;
                    imagejpeg($newim, $imagefilename) or die($_SESSION['result'] ="<strong>Error: Couldn't save image resize!</strong><br>");
                    echo $imw. $imh. $nw. $imagefilename;       

                    //// Thumbnail Creation //////
                    $imw = imagesx($im); // uploaded image width
                    $imh = imagesy($im); // uploaded image height
                    $nh = $thumbnailheight; // thumbnail height
                    $nw = round(($nh / $imh) * $imw); //thumnail width
                    $newim = imagecreatetruecolor ($nw, $nh);
                    imagecopyresampled ($newim,$im, 0, 0, 0, 0, $nw, $nh, $imw, $imh) ;
                    $thumbfilename = $thumbnailfolder.$uploadfilename ;
                    imagejpeg($newim, $thumbfilename) or die($_SESSION['result'] ="<strong>Error: Couldn't save thumnbail!</strong><br>");
                    //echo $thumbfilename;
                    //$_SESSION['result'] ='<img src="'.$thumbfilename.'"/><br>' ;
                }
            } else { $_SESSION['result'] = "<strong>Error: Couldn't save file($fulluploadfilename)!</strong><br>";
            }
        }
    }
}
//unlink($fulluploadfilename);          
            ////////////////////////////////////////////////
//connect to mysql server
    $c = mysql_connect(DB_SERVER, DB_USERNAME, DB_PASSWORD, DB);
    if (!$c){
        $_SESSION['result'] .= mysql_error().'<br>';
        return;
    }


    if (!mysql_select_db(DB)){
        $_SESSION['result'] .= mysql_error().'<br>';
        mysql_close($c);
        return;
    }

    //5. insert settings
    $sql = "INSERT INTO photo(photo_id,photo_filename) VALUES ('".$_SESSION['info_id']."','".$uploadfilename."')";


    if (!mysql_query($sql,$c)){
            mysql_close($c);
            return;
    }
    mysql_close($c);
//////////////////////////////////////////////
//$ref = getenv("HTTP_REFERER");
//header("Location: ".$ref);

?>

Answer 1

只是

unlink($fulluploadfilename);

在创建所有缩略图之后。