php - 将上传文件的名称保存到我的 SQL 数据库的此表中

Question

这就是我正在努力实现的目标。 我需要用户能够加载图片并将其显示在他们的个人资料页面上。我的 SQL 数据库中有一个名为“members”的表，其字段如下:用户名、密码、名字、姓氏、照片。 除照片外的所有字段均在注册表上填写。一旦用户进入他们的个人资料页面，他们就会找到一个将图片上传到他们的个人资料的表格。 我得到了 upload_form.php.. 的代码(下面列出的代码)和另一个文件 upload_processor.php(后面列出的代码)

此代码成功将文件加载到我的文件夹 uploaded_files 中，并将文件重命名为如下所示... 1140732936-filename.jpg 以确保文件是唯一的。 如何将 1140732936-filename.jpg 的名称保存到我的 sql 表上的“照片”字段中？有什么办法吗？请帮忙....

upload_form 代码

    <?php

    // filename: upload.form.php

    // first let's set some variables

    // make a note of the current working directory relative to root.
    $directory_self = str_replace(basename($_SERVER['PHP_SELF']), '',     $_SERVER['PHP_SELF']);

    // make a note of the location of the upload handler script
    $uploadHandler = 'http://' . $_SERVER['HTTP_HOST'] . $directory_self .   'upload.processor.php';

    // set a max file size for the html upload form
    $max_file_size = 3000000; // size in bytes

    // now echo the html page
    ?>

这是同一文件中的 html 表单

<form id="Upload" action="<?php echo $uploadHandler ?>" enctype="multipart/form-data" method="post">

    <h1>
        Upload form
    </h1>

    <p>
        <input type="hidden" name="MAX_FILE_SIZE" value="<?php echo $max_file_size ?>">
    </p>

    <p>
        <label for="file">File to upload:</label>
        <input id="file" type="file" name="file">
    </p>

    <p>
        <label for="submit">Press to...</label>
        <input id="submit" type="submit" name="submit" value="Upload me!">
    </p>

</form>


</body>

这是处理表单的文件的代码。

    <?php

    // filename: upload.processor.php

    // first let's set some variables

    // make a note of the current working directory, relative to root.
    $directory_self = str_replace(basename($_SERVER['PHP_SELF']), '', $_SERVER['PHP_SELF']);

    // make a note of the directory that will recieve the uploaded file
    $uploadsDirectory = $_SERVER['DOCUMENT_ROOT'] . $directory_self . 'uploaded_files/';

    // make a note of the location of the upload form in case we need it
    $uploadForm = 'http://' . $_SERVER['HTTP_HOST'] . $directory_self . 'updateprofile.php';

    // make a note of the location of the success page
    $uploadSuccess = 'http://' . $_SERVER['HTTP_HOST'] . $directory_self . 'upload.success.php';

    // fieldname used within the file <input> of the HTML form
    $fieldname = 'file';

    // Now let's deal with the upload

    // possible PHP upload errors
    $errors = array(1 => 'php.ini max file size exceeded',
            2 => 'html form max file size exceeded',
            3 => 'file upload was only partial',
            4 => 'no file was attached');

    // check the upload form was actually submitted else print the form
    isset($_POST['submit'])
    or error('the upload form is neaded', $uploadForm);

    // check for PHP's built-in uploading errors
    ($_FILES[$fieldname]['error'] == 0)
    or error($errors[$_FILES[$fieldname]['error']], $uploadForm);

    // check that the file we are working on really was the subject of an HTTP upload
    @is_uploaded_file($_FILES[$fieldname]['tmp_name'])
    or error('not an HTTP upload', $uploadForm);

    // validation... since this is an image upload script we should run a check  
    // to make sure the uploaded file is in fact an image. Here is a simple check:
    // getimagesize() returns false if the file tested is not an image.
    @getimagesize($_FILES[$fieldname]['tmp_name'])
    or error('only image uploads are allowed', $uploadForm);

    // make a unique filename for the uploaded file and check it is not already
    // taken... if it is already taken keep trying until we find a vacant one
    // sample filename: 1140732936-filename.jpg
    $now = time();
    while(file_exists($uploadFilename = $uploadsDirectory.$now.'-'.$_FILES[$fieldname]['name']))
    {
     $now++;
    }
    // now let's move the file to its final location and allocate the new filename to it
    @move_uploaded_file($_FILES[$fieldname]['tmp_name'], $uploadFilename)
    or error('receiving directory insuffiecient permission', $uploadForm);

    // If you got this far, everything has worked and the file has been successfully saved.
    // We are now going to redirect the client to a success page.
    header('Location: ' . $uploadSuccess);

    // The following function is an error handler which is used
    // to output an HTML error page if the file upload fails
    function error($error, $location, $seconds = 5)
    {   
    header("Refresh: $seconds; URL=\"$location\"");
    echo '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"'."\n".
    '"http://www.w3.org/TR/html4/strict.dtd">'."\n\n".
    '<html lang="en">'."\n".
    '    <head>'."\n".
    '        <meta http-equiv="content-type" content="text/html; charset=iso-   8859-1">'."\n\n".
    '        <link rel="stylesheet" type="text/css" href="stylesheet.css">'."\n\n".
    '    <title>Upload error</title>'."\n\n".
    '    </head>'."\n\n".
    '    <body>'."\n\n".
    '    <div id="Upload">'."\n\n".
    '        <h1>Upload failure</h1>'."\n\n".
    '        <p>An error has occured: '."\n\n".
    '        <span class="red">' . $error . '...</span>'."\n\n".
    '         The upload form is reloading</p>'."\n\n".
    '     </div>'."\n\n".
    '</html>';
    exit;
    } // end error handler

    ?>

Answer 1

在页面upload_processor.php中 将图像复制到服务器后添加一些 SQL。 我没有代码，因此假设您使用 microtime() 生成图像名称。 将生成的图像名称保存在名为 $variable 的变量中。然后使用该变量重命名图像并

   <?php

    // filename: upload.processor.php

    // first let's set some variables

    // make a note of the current working directory, relative to root.
    $directory_self = str_replace(basename($_SERVER['PHP_SELF']), '', $_SERVER['PHP_SELF']);

    // make a note of the directory that will recieve the uploaded file
    $uploadsDirectory = $_SERVER['DOCUMENT_ROOT'] . $directory_self . 'uploaded_files/';

    // make a note of the location of the upload form in case we need it
    $uploadForm = 'http://' . $_SERVER['HTTP_HOST'] . $directory_self . 'updateprofile.php';

    // make a note of the location of the success page
    $uploadSuccess = 'http://' . $_SERVER['HTTP_HOST'] . $directory_self . 'upload.success.php';

    // fieldname used within the file <input> of the HTML form
    $fieldname = 'file';

    // Now let's deal with the upload

    // possible PHP upload errors
    $errors = array(1 => 'php.ini max file size exceeded',
            2 => 'html form max file size exceeded',
            3 => 'file upload was only partial',
            4 => 'no file was attached');

    // check the upload form was actually submitted else print the form
    isset($_POST['submit'])
    or error('the upload form is needed', $uploadForm);

    // check for PHP's built-in uploading errors
    ($_FILES[$fieldname]['error'] == 0)
    or error($errors[$_FILES[$fieldname]['error']], $uploadForm);

    // check that the file we are working on really was the subject of an HTTP upload
    @is_uploaded_file($_FILES[$fieldname]['tmp_name'])
    or error('not an HTTP upload', $uploadForm);

    // validation... since this is an image upload script we should run a check  
    // to make sure the uploaded file is in fact an image. Here is a simple check:
    // getimagesize() returns false if the file tested is not an image.
    @getimagesize($_FILES[$fieldname]['tmp_name'])
    or error('only image uploads are allowed', $uploadForm);

    // make a unique filename for the uploaded file and check it is not already
    // taken... if it is already taken keep trying until we find a vacant one
    // sample filename: 1140732936-filename.jpg
    $now = time();
    while(file_exists($uploadFilename = $uploadsDirectory.$now.'-'.$_FILES[$fieldname]['name']))
    {
     $now++;
    }
    // now let's move the file to its final location and allocate the new filename to it
    @move_uploaded_file($_FILES[$fieldname]['tmp_name'], $uploadFilename)
    or error('receiving directory insuffiecient permission', $uploadForm);

    // If you got this far, everything has worked and the file has been successfully saved.
    // We are now going to redirect the client to a success page.
    //connect database
    mysql_query("update members set photo='".$uploadFilename."' where member_id='".$_SESSION['id']."'");

    header('Location: ' . $uploadSuccess);

    // The following function is an error handler which is used
    // to output an HTML error page if the file upload fails
    function error($error, $location, $seconds = 5)
    {   
    header("Refresh: $seconds; URL=\"$location\"");
    echo '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"'."\n".
    '"http://www.w3.org/TR/html4/strict.dtd">'."\n\n".
    '<html lang="en">'."\n".
    '    <head>'."\n".
    '        <meta http-equiv="content-type" content="text/html; charset=iso-   8859-1">'."\n\n".
    '        <link rel="stylesheet" type="text/css" href="stylesheet.css">'."\n\n".
    '    <title>Upload error</title>'."\n\n".
    '    </head>'."\n\n".
    '    <body>'."\n\n".
    '    <div id="Upload">'."\n\n".
    '        <h1>Upload failure</h1>'."\n\n".
    '        <p>An error has occured: '."\n\n".
    '        <span class="red">' . $error . '...</span>'."\n\n".
    '         The upload form is reloading</p>'."\n\n".
    '     </div>'."\n\n".
    '</html>';
    exit;
    } // end error handler

    ?>