Question

这是我制作的代码，我希望它可以工作，但某处必须有错误。我无法弄清楚自己，请帮助。

<?php

if(isset($_POST['submit'])){

    $max_size = 500000;
    $image_upload_path = "images/products/";
    $allowed_image_extension = array('jpg','jpeg','png','gif');


    for($i=0;$i<2;$i++)
    {
         //check if there is file 
        if((!empty($_FILES['image[]'][$i])) && ($_FILES['image[]']['error'][$i]==0))
        {
            //check extension
            $extension = strrchr($_FILES['image']['name'][$i], '.');
            if(in_array($extension,$allowed_image_extension))
            {
                //check file size.
                if($_FILES['image']['size'][$i] > $max_size)
                {
                    echo "file too big";
                }
                else if($_FILES['image']['size'][$i] < 1)
                {
                    echo "file empty";
                }
                else
                {
                    //we have pass file empty check,file extension check,file size check.
                    $the_uploaded_image = $_FILES['image']['tmp_name'][$i];
                    $the_uploaded_image_name = $_FILES['image']['name'][$i];

                    //replace empty space in filename with an underscore '_'
                    $the_uploaded_image_name = preg_replace('/\s/','_',$the_uploaded_image_name);

                    //get the file extension
                    $the_uploaded_image_extension = explode(',',$the_uploaded_image_name);
                    $the_new_image_name = $the_uploaded_image_name."".md5(uniqid(rand(),true))."".$the_uploaded_image_extension;

                    $save_image_as = $the_new_image_name;
                    //check file exist
                    if(file_exists($image_upload_path."".$the_new_image_name))
                    {
                        echo "file".$image_upload_path."".$the_new_image_name." already exist";
                    }
                    else
                    {
                        if(move_uploaded_file($the_uploaded_image,$save_image_as))
                        {
                            echo "image".$the_uploaded_image_name." uploaded sucessfully";
                            //set the image  path to save in database column
                        }
                        else
                        {
                            echo "there was an error uploading your image.";
                        }
                    }
                }
            }
            else
            {
            echo "extension not allowed";
            }
        }
        else
        {
            echo "please choose file to upload";
        }
    }


}

?>

<html>
<head><title>image upload</title></head>
<body>
<form action="" method="POST" enctype="multipart/form-data">
    <input type="file" name="image[]"/>
    <input type="file" name="image[]"/>
    <input type="submit" value="submit"/>
</form>
</body>
</html>

这是我的新PHP代码。我得到的结果发现找不到找不到的结果。有人会告诉我这里我做错了什么。 if else条件似乎不起作用，因为两个条件都给出了输出。为什么呢？

<?php
if(isset($_POST["submit"])) {
    echo $_POST["submit"];
    echo "<br/>";
    for($i=0;$i<count($_FILES['image'])-1;$i++)
    {
        if(!empty($_FILES['image']['tmp_name'][$i]))
        {
            echo "found";    
            echo "<br/>";
        }
        else
        {
            echo "not found";
            echo "<br/>";
        }
    }

}
else
{
    echo "form is not posted";
}

＆GT;

Answer 1

我想明显的WTF是$_FILES['image[]'][$i]，它应该只是$_FILES['image'][$i]（名称中的[]使它成为一个数组，它不是名称的一部分。）

如果没有更多信息，我不愿意为您排除故障。在代码中的各个点尝试：

echo '<pre>';
var_dump($_POST); // or other variables
echo '</pre>';

这应该可以帮助您调试自己的代码，这是您必须学会做的事情。

我的代码出了什么问题？多个上传PHP文件

1 个答案: