Question

使用此代码一段时间后，我发现人们正在上传带有空格和逗号的文件。

我已经尝试了函数reg_replace，并且上传的文件名实际上已编辑，其中的空格被替换为所谓的下划线。

我还需要告诉用户最终的文件名，因此如果上传成功，我需要在文本字段中包含该文件名。最后一部分是缺失的部分。

如何在以下背景下完成？

<?php

$target_dir = "extra_images/";
$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
$uploadOk = 1;
$imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);


// Check if file already exists
if (file_exists($target_file)) {
    echo "<div class=\"alert alert-danger\" role=\"alert\"><strong>File already exists.</strong></div>";
    $uploadOk = 0;
}
// Check file size
if ($_FILES["fileToUpload"]["size"] > 3750000) {
    echo "<div class=\"alert alert-danger\" role=\"alert\"><strong>Your file is too large.</strong></div>";
    $uploadOk = 0;
}

//Check for pdf format
if (!empty($_FILES['fileToUpload']['tmp_name'])) {
    $finfo = finfo_open(FILEINFO_MIME_TYPE);
    $mime = finfo_file($finfo, $_FILES['fileToUpload']['tmp_name']);
    if (($mime != 'application/pdf') && ($mime != 'image/jpg') && ($mime != 'image/jpeg') && ($mime != 'image/gif') && ($mime != 'image/png')) {

        $uploadOk = 0;
        echo "<div class=\"alert alert-danger\" role=\"alert\"><strong>This file is not a valid file.</strong></div>";

        //exit();

    }} //this bracket was missing I think


// Check if $uploadOk is set to 0 by an error
if ($uploadOk == 0) {
    echo "<div class=\"alert alert-danger\" role=\"alert\"><strong>The file was not uploaded.</strong></div>";
// if everything is ok, try to upload file
} else {

    $target_file = preg_replace('/\s+/', '_', $target_file);//to replace spaces...

    if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) {

        echo "<div class=\"alert alert-success\" role=\"alert\">The file <strong>". basename( $_FILES["fileToUpload"]["name"]). "</strong> has been uploaded.</div><br>Please copy this filename: <span class=\"form-inline\"><input type=\"text\" value=\"". basename( $_FILES["fileToUpload"]["name"]). "\" class=\"form-control input-sm\" style=\"width:220px;\" /></span> And paste it in an empty Extra image field above and save the form.";
    } else {
        echo "<div class=\"alert alert-danger\" role=\"alert\">There was an error uploading your file.</div>";
    }
}
echo "</br></br><p><button class=\"btn btn-default pull-right\" style=\"margin-right:5px;\" type=\"submit\" onclick=\"javascript:history.go(-1)\"><span class=\"glyphicon glyphicon-step-backward\" aria-hidden=\"true\"></span> Back</button></p>";
exit();

?>

Answer 1

您可以使用str_replace（）将空格更改为下划线。

$str = 'hai welcome';
$newstr = str_replace(' ', '_', $str);
echo $newstr;

现在你的输出没有空间;

Answer 2

好吧，我设法让它工作，它现在将文件名保存到数据库，这是我的其他需求之一。用户ip捕获也可以，但只能使用$ _SERVER ['REMOTE_ADDR'];变量我想知道如何使用get_client_ip（）。试图将$ ipaddress保存到db字段但没有工作...感谢您的想法和帮助。

<?php

                $target_dir = "images_folder/";
                $target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
                $target_file = preg_replace('/\s+/', '_', $target_file);//to replace spaces...
                $uploadOk = 1;
                $imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);

                // Function to get the client IP address
                function get_client_ip() {
                    $ipaddress = '';
                    if ($_SERVER['HTTP_CLIENT_IP'])
                        $ipaddress = $_SERVER['HTTP_CLIENT_IP'];
                    else if($_SERVER['HTTP_X_FORWARDED_FOR'])
                        $ipaddress = $_SERVER['HTTP_X_FORWARDED_FOR'];
                    else if($_SERVER['HTTP_X_FORWARDED'])
                        $ipaddress = $_SERVER['HTTP_X_FORWARDED'];
                    else if($_SERVER['HTTP_FORWARDED_FOR'])
                        $ipaddress = $_SERVER['HTTP_FORWARDED_FOR'];
                    else if($_SERVER['HTTP_FORWARDED'])
                        $ipaddress = $_SERVER['HTTP_FORWARDED'];
                    else if($_SERVER['REMOTE_ADDR'])
                        $ipaddress = $_SERVER['REMOTE_ADDR'];
                    else
                        $ipaddress = 'UNKNOWN';
                    return $ipaddress;
                }
                $ipaddress2=$_SERVER['REMOTE_ADDR'];

                // Check if file already exists
                if (file_exists($target_file)) {
                    echo "<div class=\"alert alert-danger\" role=\"alert\"><strong>File already exists.</strong></div>";
                    $uploadOk = 0;
                }
                // Check file size
                if ($_FILES["fileToUpload"]["size"] > 3750000) {
                    echo "<div class=\"alert alert-danger\" role=\"alert\"><strong>Your file is too large.</strong></div>";
                    $uploadOk = 0;
                }

                //Check for pdf format
                if (!empty($_FILES['fileToUpload']['tmp_name'])) {
                    $finfo = finfo_open(FILEINFO_MIME_TYPE);
                    $mime = finfo_file($finfo, $_FILES['fileToUpload']['tmp_name']);
                    if (($mime != 'application/pdf') && ($mime != 'image/jpg') && ($mime != 'image/jpeg') && ($mime != 'image/gif') && ($mime != 'image/png')) {

                        $uploadOk = 0;
                        echo "<div class=\"alert alert-danger\" role=\"alert\"><strong>This file is not a valid file.</strong></div>";

                        //exit();

                    }} //this bracket was missing I think


                // Check if $uploadOk is set to 0 by an error
                if ($uploadOk == 0) {
                    echo "<div class=\"alert alert-danger\" role=\"alert\"><strong>The file was not uploaded.</strong></div>";
                // if everything is ok, try to upload file
                } else {



                    if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) {

                        $cleanFilename=basename("$target_file");

                        // Connects to your Database
                        mysql_connect("localhost", "db_username", "db_pass") or die(mysql_error()) ;
                        mysql_select_db("db_name") or die(mysql_error()) ;

                        //Writes the information to the database
                        mysql_query("INSERT INTO tableName (filename,ipaddress)
                        VALUES ('$cleanFilename', '$ipaddress2')") ;


                        echo "<div class=\"alert alert-success\" role=\"alert\">The file <strong>". basename( $_FILES["fileToUpload"]["name"]). "</strong> has been uploaded.</div><br>Please copy this filename: <span class=\"form-inline\"><input type=\"text\" value=\" $cleanFilename \" class=\"form-control input-sm\" style=\"width:320px;\" /></span> And paste it in an empty Extra image field above and save the form. If you see the image after saving you've done right. $cleanFilename";
                    } else {
                        echo "<div class=\"alert alert-danger\" role=\"alert\">There was an error uploading your file.</div>";
                    }
                }
                echo "</br></br><p><button class=\"btn btn-default pull-right\" style=\"margin-right:5px;\" type=\"submit\" onclick=\"javascript:history.go(-1)\"><span class=\"glyphicon glyphicon-step-backward\" aria-hidden=\"true\"></span> Back</button></p>";
exit();
?>

从上传的文件名中删除空格和逗号

2 个答案: