Question

下面是我尝试的代码，但显示了一些警告错误：

警告：getimagesize（C：\ xampp \ tmp \ php2F0B.tmp）：无法打开流：第55行的C：\ xampp \ htdocs \ maahima \ admin \ uploadBulkImages.php中没有此类文件或目录

警告：imagejpeg（）要求参数1为资源，字符串在第66行的C：\ xampp \ htdocs \ maahima \ admin \ uploadBulkImages.php中给出

我希望代码使用压缩图像批量插入文件夹中的图像。

<?php
if(isset($_FILES['file']['tmp_name'])){
    $pro_image = $_FILES['file']['tmp_name'];
    $no_of_file = count($_FILES['file']['tmp_name']);
    $name = ''; $type = ''; $size = ''; $error = '';

    for($i=0;$i < $no_of_file;$i++){
        if(! is_uploaded_file($_FILES['file']['tmp_name'][$i])){
            header("location:add_products.php?error=er8r5r");
        }
        else{
            if(move_uploaded_file($_FILES['file']['tmp_name'][$i],"../products/".$_FILES['file']['name'][$i])){
                if ($_FILES["file"]["error"][$i] > 0) { 
                    $error = $_FILES["file"]["error"];
                }
                else {
                    $image="";
                    $error = "Uploaded image should be jpg or gif or png";
                    $url = '../smallSize-Image/'.$_FILES['file']['name'][$i];
                    echo  $url;
                    $source_url=$_FILES["file"]["tmp_name"][$i];
                    $destination_url=$url;
                    $quality=12;
                    $info = getimagesize($source_url);

                    if ($info['mime'] == 'image/jpeg')
                        $image = imagecreatefromjpeg($source_url);
                    elseif ($info['mime'] == 'image/gif')
                        $image = imagecreatefromgif($source_url);
                    elseif ($info['mime'] == 'image/png')
                        $image = imagecreatefrompng($source_url);

                    imagejpeg($image, $destination_url, $quality);
                    return $destination_url;

                    $buffer = file_get_contents($url);
                    /* Force download dialog... */
                    //header("Content-Type: application/force-download");
                    //header("Content-Type: application/octet-stream");
                    //header("Content-Type: application/download");
                    // header("location:add_products.php?succcess=s8sc5s");
                    /* Don't allow caching... */
                    //  header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
                    /* Set data type, size and filename */
                    //header("Content-Type: application/octet-stream");
                    //header("Content-Length: " . strlen($buffer));
                    //header("Content-Disposition: attachment; filename=$url");
                    /* Send our file... */
                    echo $buffer;
                }
            }
            else{
                header("location:add_products.php?error=er8r5r");
            }
        }  
    }
}
else{
}
?>

Answer 1

你的脚本有很多不合逻辑的功能。如果您要重定向，则需要exit。你不应该在脚本中间有return，这有点随机（可能这是未完成的脚本，它在另一个函数/方法中？）。如果我这样做，我会做一些事情。

如果您还没有配置有一些绝对定义，我会创建一个并将其包含在顶部的每个初始加载页面上。

如果正确实施并且已经证明，这是经过测试和运作的。使用它的一部分，它的一部分，或者不使用它，但它确实有用：

<强> /config.php

<?php
define('DS',DIRECTORY_SEPARATOR);
define('ROOT_DIR',__DIR__);
define('UPLOAD_DIR',ROOT_DIR.DS.'uploads'.DS.'images');
define('THUMB_DIR',ROOT_DIR.DS.'uploads'.DS.'thumbs');
define('VENDOR_DIR',ROOT_DIR.DS.'vendors');

我会考虑制作一些快速函数，在这种情况下是一个类/方法系统来完成一些简单的任务。

<强> /vendors/Files.php

class Files
    {
        /*
        ** @description This will turn a numbered $_FILES array to a normal one
        */
        public  static  function normalize($key = 'file')
            {
                foreach($_FILES[$key]['tmp_name'] as $fKey => $value) {
                    $FILES[]    =   array(
                        'tmp_name'=>$_FILES[$key]['tmp_name'][$fKey],
                        'name'=>$_FILES[$key]['name'][$fKey],
                        'error'=>$_FILES[$key]['error'][$fKey],
                        'size'=>$_FILES[$key]['size'][$fKey],
                        'type'=>$_FILES[$key]['type'][$fKey]
                    );
                }

                return $FILES;
            }
        /*
        ** @description I would contain this step into an editable method for
        **              ease of use and reuse.
        */
        public  static  function compress($path, $dest, $quality = 12)
            {
                $info   =   getimagesize($path);

                if($info['mime'] == 'image/jpeg')
                    $image  =   imagecreatefromjpeg($path);
                elseif($info['mime'] == 'image/gif')
                    $image  =   imagecreatefromgif($path);
                elseif($info['mime'] == 'image/png')
                    $image  =   imagecreatefrompng($path);

                imagejpeg($image,$dest,$quality);
            }
    }

把它们放在一起，在这种情况下，我可能会抛出异常并将错误保存到会话中。在add_products.php页面上循环浏览它们。

# Add our config
include(__DIR__.DIRECTORY_SEPARATOR.'config.php');
# Add our file handler class (spl_autoload_register() is a better option)
include(VENDOR_DIR.DS.'Files.php');
# Observe for file upload
if(!empty($_FILES['file']['tmp_name'])){
    # Use our handy convert method
    $FILES      =   Files::normalize();
    # Try here
    try {
        # Loop through our normalized file array
        foreach($FILES as $i => $file){
            # Throw error exception here
            if(!is_uploaded_file($file['tmp_name']))
                throw new Exception('File is not an uploaded document.');
            # I like to add a create directory line or two to cover all bases
            if(!is_dir(UPLOAD_DIR)) {
                if(!mkdir(UPLOAD_DIR,0755,true))
                    throw new Exception('Upload folder could not be created.');
            }
            # Ditto
            if(!is_dir(THUMB_DIR)) {
                if(!mkdir(THUMB_DIR,0755,true))
                    throw new Exception('Thumb folder could not be created.');
            }
            # Create an absolute path for the full size upload
            $path   =   UPLOAD_DIR.DS.$file['name'];
            # If no errors and file is moved properly, compress and save thumb
            if(($file["error"]) == 0 && move_uploaded_file($file['tmp_name'],$path))
                # Create a thumbnail from/after the file you moved, not the temp file
                Files::compress($path,THUMB_DIR.DS.$file['name']);
            # Throw error on fail
            else
                throw new Exception('An unknown upload error occurred.');
        }
    }
    # Catch, assign, redirect
    catch (Exception $e) {
        $_SESSION['errors'][]   =   $e->getMessage();
        header("location: add_products.php?error=er8r5r");
        exit;
    }
}

如何在使用php上传图像时压缩多个图像大小？

1 个答案: