图像上载脚本错误

尝试如下移动文件：

if (move_uploaded_file($_FILES['image']['tmp_name'], $images_location.$image_random_name))
{
    //success
}
else
{
    //fail
}

还要检查目标位置是否存在并且设置正确，以及目标位置的权限是否正确——确保apache（或正在运行的任何程序）具有正确的写访问权限。要设置apache的权限，它是这样的：

chown -R nobody directory_name
chmod 755 -R directory_name

Hi我使用以下代码，它可以顺利上传图像。检查一下，如果你喜欢就用。让我知道。

  <?php if (isset($_POST['submitted'])) 
  { // Handle the form.
if (isset($_FILES['image'])) 
{
    function getExtension($str) 
    {
         $i = strrpos($str,".");
         if (!$i) { return ""; }
         $l = strlen($str) - $i;
         $ext = substr($str,$i,$l);
         return $ext;
    }
    function getName($str) 
    {
         $i = strrpos($str,".");
         if (!$i) { return ""; }
         $l = strlen($str) - $i;
         $name = substr($str,0,$i);
         return $name;
    }
    $image=$_FILES['image']['name'];
    //if it is not empty
    if ($image) 
    {
    //get the original name of the file from the clients machine
        $filename = stripslashes($_FILES['image']['name']);
    //get the extension of the file in a lower case format
        $extension = getExtension($filename);
        $name = getName($filename);
        $extension = strtolower($extension);
    //if it is not a known extension, we will suppose it is an error and will not  upload the file,  
    //otherwise we will do more tests
        if (($extension != ".jpg") && ($extension != ".jpeg") && ($extension != ".png") && ($extension != ".gif")) 
        {
        //print error message
            echo '<p class="error">Please upload a JPEG, GIF or PNG image.</p>';
        }
        else
        {
            if ($_FILES['image']['error'] > 0) 
            {
                echo '<p class="error">The file could not be uploaded because: <strong>';
                // Print a message based upon the error.
                switch ($_FILES['image']['error']) 
                {
                    case 1:
                        print 'The file exceeds the upload_max_filesize setting in php.ini.';
                        break;
                    case 2:
                        print 'The file exceeds the MAX_FILE_SIZE setting in the HTML form.';
                        break;
                    case 3:
                        print 'The file was only partially uploaded.';
                        break;
                    case 4:
                        print 'No file was uploaded.';
                        break;
                    case 6:
                        print 'No temporary folder was available.';
                        break;
                    case 7:
                        print 'Unable to write to the disk.';
                        break;
                    case 8:
                        print 'File upload stopped.';
                        break;
                    default:
                        print 'A system error occurred.';
                        break;
                } // End of switch.
                print '</strong></p>';
            } // End of error IF.   
            else
            {
                // Query the database:
                $q = "SELECT * FROM images WHERE user_id='{$_SESSION["user_id"]}' AND name='$name'";    
                $r = mysqli_query ($dbc, $q) or trigger_error("Query: $q'n<br />MySQL Error: " . mysqli_error($dbc));
                if (@mysqli_num_rows($r) == 0)
                { // A match was made.
                $q = "INSERT INTO images (user_id, title, name, extension, profile, date_uploaded) VALUES ('{$_SESSION["user_id"]}', '$name', '$name', '$extension', 'no', NOW() )";
                $r = mysqli_query ($dbc, $q) or trigger_error("Query: $q'n<br />MySQL Error: " . mysqli_error($dbc));
                    if (mysqli_affected_rows($dbc) == 1) 
                    {
                        //we will give an unique name, for example the time in unix time format
                        $image_name = $name . $extension;
                        //the new name will be containing the full path where will be stored (images folder)
                        $newname = "../uploads/".$_SESSION["user_id"]."/".$image_name;
                        //we verify if the image has been uploaded, and print error instead
                        move_uploaded_file($_FILES['image']['tmp_name'], $newname);
                        // Delete the file if it still exists:
                        if (file_exists ($_FILES['image']['tmp_name']) && is_file($_FILES['image']['tmp_name']) ) 
                        {
                            unlink ($_FILES['image']['tmp_name']);
                        }
                    }
                    else
                    {
                        echo '<p class="error">aaa You could not upload pictures due to a system error. We apologize for any inconvenience.</p>';
                    }
                }
                else
                {
                    echo '<p class="error">This picture is already uloaded. Choose another.</p>';   
                }
            }
        }
    }
}
}
?>
<h2>Upload More Pics of You</h2>
<form id="upload_image" name="upload_image" method="post" action="upload_image.php" enctype="multipart/form-data" >
<table width="318" border="0" cellpadding="0" align="left">
<tr>
    <td colspan="2" align="center">Select a JPEG, GIF or PNG image of you <br />(512KB or smaller) to be uploaded:</td>
</tr>
<tr>
    <td width="47" align="right">Image:</td>
    <td width="265">
    <input type="file" name="image" id="image" /><input type="hidden" name="MAX_FILE_SIZE" value="524288"> </td>
</tr>
<tr>
    <td align="center" colspan="2"><span class="art-button-wrapper">
            <span class="l"> </span>
            <span class="r"> </span>
            <input class="art-button" type="submit" name="submit" value="Submit" /><input type="hidden" name="submitted" value="TRUE" />
        </span></td>
</tr>
</table>
</form>