图片上传 PHP

Posted 2023-02-24

【中文标题】图片上传 PHP

【英文标题】：Images Uploading PHP

【发布时间】：2016-10-12 04:45:12

【问题描述】：

我一直在做一个比我做起来更容易的项目。

我创建了一个医生和患者之间的完整网站； 我严重卡在上传和检索图片上！！

这是我一直在构建的代码..

<?php session_start();

$un = "xxx";
$pw = "xxx";
$hn = "xxx";
$dbhandle = mysql_connect($hn, $un, $pw) or die("Couldn't connect to the database");
mysql_set_charset('utf8');
$selected = mysql_select_db("dsnnet_login", $dbhandle);
$myusername = $_SESSION['snamed'];


$target_dir = "uploaded/";
$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
$sql = mysql_query("UPDATE docTable set photoname='$target_file' WHERE Username= '$myusername'");
$uploadOk = 1;
$imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);
// Check if image file is a actual image or fake image
if(isset($_POST["submit"])) 
    $check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
    if($check !== false) 
        echo "File is an image - " . $check["mime"] . ".";
        $uploadOk = 1;
     else 
        echo "File is not an image.";
        $uploadOk = 0;
    

// Check if file already exists

// Check file size
if ($_FILES["fileToUpload"]["size"] > 500000) 
    echo "Sorry, your file is too large.";
    $uploadOk = 0;

// Allow certain file formats
if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg"
&& $imageFileType != "gif" ) 
    echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
    $uploadOk = 0;

// Check if $uploadOk is set to 0 by an error
if ($uploadOk == 0) 
    echo "Sorry, your file was not uploaded.";
// if everything is ok, try to upload file
 else 
    if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) 
        echo "The file ". basename( $_FILES["fileToUpload"]["name"]). " has been uploaded.";
     else 
        echo "Sorry, there was an error uploading your file.";
    


header("location: docp.php");

?>

“工作页面”如下：

<?php session_start();

$un = "xxx";
$pw = "xxx";
$hn = "xxx";
$dbhandle = mysql_connect($hn, $un, $pw) or die("Couldn't connect to the database");
mysql_set_charset('utf8');
$selected = mysql_select_db("dsnnet_login", $dbhandle);
$myusername = $_SESSION['snamed'];


$target_dir = "uploaded/";
$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
$sql = mysql_query("UPDATE docTable set photoname='$target_file' WHERE Username= '$myusername'");
$uploadOk = 1;
$imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);
// Check if image file is a actual image or fake image
if(isset($_POST["submit"])) 
    $check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
    if($check !== false) 
        echo "File is an image - " . $check["mime"] . ".";
        $uploadOk = 1;
     else 
        echo "File is not an image.";
        $uploadOk = 0;
    

// Check if file already exists

// Check file size
if ($_FILES["fileToUpload"]["size"] > 500000) 
    echo "Sorry, your file is too large.";
    $uploadOk = 0;

// Allow certain file formats
if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg"
&& $imageFileType != "gif" ) 
    echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
    $uploadOk = 0;

// Check if $uploadOk is set to 0 by an error
if ($uploadOk == 0) 
    echo "Sorry, your file was not uploaded.";
// if everything is ok, try to upload file
 else 
    if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) 
        echo "The file ". basename( $_FILES["fileToUpload"]["name"]). " has been uploaded.";
     else 
        echo "Sorry, there was an error uploading your file.";
    


header("location: docp.php");

?>

谁能帮我弄清楚？ 我已经尝试了至少4天了.. 我不会放弃..我愿意学习..

谢谢你们：） 干杯

【问题讨论】：

您在上传时是否遇到任何错误，如提到的那样 - 抱歉，只允许使用 JPG、JPEG、PNG 和 GIF 文件。或抱歉，您的文件太大。

【参考方案1】：

在下方查看

1.tag 表单有 enctype="multipart/form-data"

2.如果不是localhost，文件夹上传必须设置permissiontion 777

【参考方案2】：

我可以知道让你卡住的错误信息吗？

在此之前，请检查您的表单 enctype 属性。您的上传表单必须是：

<form action="upload.php" method="post" enctype="multipart/form-data">
    Select image to upload:
    <input type="file" name="fileToUpload" id="fileToUpload">
    <input type="submit" value="Upload Image" name="submit">
</form>