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我有一个页面，允许用户上传5个文件和每个文件的信息。我已经成功地每次上传1个文件，但每当我尝试上传2个或更多文件时，网页都会出现异常，然后Google Chrome会提示没有数据从服务器发送（我使用GoDaddy）。大约一分钟后，我的网站将恢复。很奇怪。上传页面没有多个文件
在我的代码中是否有导致这种反应的东西？我的for（）语句是否正确，以允许最多5次上传？有没有更简单的方法来做到这一点？仍在试图弄清楚这一切了，但这里是我写的代码：
<?
if ($_POST['submitupload']) {
for ($j=1;$j<6;$j++) {
//START FIRST FILE
${"title".$j}=$_POST['title'.$j];
${"authors".$j}=$_POST['authors'.$j];
${"description".$j}=$_POST['description'.$j];
${"keywords".$j}=$_POST['keywords'.$j];
${"private".$j}=$_POST['private'.$j];
if (${"private".$j}=="Public" || ${"private".$j}=="") {
${"private".$j}="1";
}
else {
${"private".$j}="0";
}
${"uploaded".$j}=$_FILES['uploaded'.$j];
if (${"uploaded".$j}=="") {
echo "<div style='margin-bottom:10px; font-size:14px; color:red;'>Nothing was submitted.</div>";
}
if (($_FILES['uploaded'.$j]['size'] > 0) && (${"title".$j}=="" || ${"authors".$j}=="" || ${"description".$j}=="" || ${"keywords".$j}=="")) {
echo "<div style='margin-bottom:10px; font-size:14px; color:red;'>Please fill out all information for each file (File $j).</div>";
}
else {
//This function separates the extension from the rest of the file name and returns it
if ($j==1) {
function findexts1 ($filename) {
$filename = strtolower($filename) ;
$exts = @(split("[/\\.]", $filename));
$n = count($exts)-1;
$exts = $exts[$n];
return $exts;
}
}
if ($j==2) {
function findexts2 ($filename) {
$filename = strtolower($filename) ;
$exts = @(split("[/\\.]", $filename));
$n = count($exts)-1;
$exts = $exts[$n];
return $exts;
}
}
if ($j==3) {
function findexts3 ($filename) {
$filename = strtolower($filename) ;
$exts = @(split("[/\\.]", $filename));
$n = count($exts)-1;
$exts = $exts[$n];
return $exts;
}
}
if ($j==4) {
function findexts4 ($filename) {
$filename = strtolower($filename) ;
$exts = @(split("[/\\.]", $filename));
$n = count($exts)-1;
$exts = $exts[$n];
return $exts;
}
}
if ($j==5) {
function findexts5 ($filename) {
$filename = strtolower($filename) ;
$exts = @(split("[/\\.]", $filename));
$n = count($exts)-1;
$exts = $exts[$n];
return $exts;
}
}
${"date".$j}=md5(date('Y-m-d H:i:s'));
${"datetime".$j}=date('Y-m-d H:i:s');
//This applies the function to our file
if ($j==1) {
$ext = findexts1 ($_FILES['uploaded'.$j]['name']) ;
}
if ($j==2) {
$ext = findexts2 ($_FILES['uploaded'.$j]['name']) ;
}
if ($j==3) {
$ext = findexts3 ($_FILES['uploaded'.$j]['name']) ;
}
if ($j==4) {
$ext = findexts4 ($_FILES['uploaded'.$j]['name']) ;
}
if ($j==5) {
$ext = findexts5 ($_FILES['uploaded'.$j]['name']) ;
}
$type = $_FILES['uploaded'.$j]['type'];
$size = $_FILES['uploaded'.$j]['size'];
if (($_FILES['uploaded'.$j]['size'] > 0) && ($type!="audio/mp3" && $type!="audio/mp4" && $type!="audio/mpeg" && $type!="image/gif" && $type!="image/jpeg" && $type!="image/png" && $type!="text/plain" && $type!="video/mpeg" && $type!="video/mp4" && $type!="application/pdf")) {
echo "<div style='margin-bottom:10px; font-size:14px; color:red;'>Not a valid file type.<br>mp3, mp4, mpeg, gif, jpeg, png, txt, pdf (File $j)</div>";
}
elseif ($_FILES['uploaded'.$j]['size'] > "1073741824") {
echo "<div style='margin-bottom:10px; font-size:14px; color:red;'>Files must not exceed 1024MB (File $j)</div>";
}
elseif ($_FILES['uploaded'.$j]['size'] > 0) {
//This line assigns a random number to a variable. You could also use a timestamp here if you prefer.
$ran = $username.$j.${"date".$j};
//This takes the random number (or timestamp) you generated and adds a . on the end, so it is ready of the file extension to be appended.
$ran2 = $ran.".";
$site = "thefiles/".$ran2.$ext;
//This assigns the subdirectory you want to save into... make sure it exists!
$target = "thefiles/";
//This combines the directory, the random file name, and the extension
$target = $target.$ran2.$ext;
//Insert file info into the database.
$sql= $conn->prepare('INSERT INTO files (name, link, description, user_id, datetime, public) VALUES (:name, :link, :description, :userid, :datetime, :public)');
$sql->bindParam(':name', ${"title".$j});
$sql->bindParam(':link', $site);
$sql->bindParam(':description', ${"description".$j});
$sql->bindParam(':userid', $_SESSION['uid']);
$sql->bindParam(':datetime', ${"datetime".$j});
$sql->bindParam(':public', ${"private".$j});
$sql->execute();
//Get the fileID for future reference.
$getfile=$conn->prepare('SELECT * FROM files WHERE name=:name AND description=:description AND link=:link AND user_id=:userid AND datetime=:datetime AND public=:public');
$getfile->bindParam(':name', ${"title".$j});
$getfile->bindParam(':link', $site);
$getfile->bindParam(':description', ${"description".$j});
$getfile->bindParam(':userid', $_SESSION['uid']);
$getfile->bindParam(':datetime', ${"datetime".$j});
$getfile->bindParam(':public', ${"private".$j});
$getfile->execute();
$filerow=$getfile->fetch();
$fileid=$filerow['ID'];
//Seperate keywords and insert into database
${"thekeyword".$j} = explode(", ", ${"keywords".$j});
$countkeywords=count(${"thekeyword".$j});
for ($i=0;$i<$countkeywords;$i++) {
$keywordsql= $conn->prepare('INSERT INTO filekeywords (fileid, keyword, public, userid) VALUES (:fileid, :keyword, :public, :userid)');
$keywordsql->bindParam(':fileid', $fileid);
$keywordsql->bindParam(':userid', $_SESSION['uid']);
$keywordsql->bindParam(':public', ${"private".$j});
$keywordsql->bindParam(':keyword', ${"thekeyword".$j}[$i]);
$keywordsql->execute();
}
//Seperate authors and insert into database
${"theauthors".$j} = explode(", ", ${"authors".$j});
$countauthors=count(${"theauthors".$j});
for ($i=0;$i<$countauthors;$i++) {
$authorsql= $conn->prepare('INSERT INTO fileauthors (fileid, author, public, userid) VALUES (:fileid, :author, :public, :userid)');
$authorsql->bindParam(':fileid', $fileid);
$authorsql->bindParam(':userid', $_SESSION['uid']);
$authorsql->bindParam(':public', ${"private".$j});
$authorsql->bindParam(':author', ${"authors".$j});
$authorsql->execute();
}
if(move_uploaded_file($_FILES['uploaded'.$j]['tmp_name'], $target)) {
echo "<div style='margin-bottom:10px; font-size:14px;'>Upload successful (File $j).</div>";
}
}
}
}
} //END IF(SUBMITUPLOAD)
?>
<form action="" method="post" enctype="multipart/form-data">
<!--FILE 1-->
<div style="margin-bottom:30px; border:2px solid silver; width:550px; border-radius:15px; box-shadow: 5px 5px 2px #888888;">
<div class="upload-textbox" style="padding-bottom:8px; padding-top:8px">
<input type="text" name="title1" placeholder="Title">
</div>
<div class="upload-textbox" style="padding-bottom:8px;">
<input type="text" name="authors1" placeholder="Authors (Ex: Ethan Bise, Jo Cook)">
</div>
<div class="upload-textbox" style="padding-bottom:8px;">
<input type="text" name="description1" placeholder="Description (500 characters)">
</div>
<div class="upload-textbox" style="padding-bottom:8px; display:inline-block;">
<input type="text" name="keywords1" placeholder="Keywords" onfocus="document.getElementById('show_hide1').style.display='inline-block';" onblur="document.getElementById('show_hide1').style.display='none';">
</div>
<div id="show_hide1" style="margin-top:-10px; margin-left:10px; position:absolute; border:2px solid black; border-radius:10px; padding:10px; display:none; background-color:#E68A2E; text-align:left;">
Max: 5
<br>
Example: Mechanical Engineering, Thermodynamics, Machine Design
</div>
<div class="styled-select-upload" style="background:white; margin-bottom:8px;">
<select name="private1">
<option value="Public">Public</option>
<option value="Private">Private</option>
</select>
</div>
<div style="padding-bottom:8px;">
<input type="file" enctype="multipart/form-data" name="uploaded1" style="display: inline-block;">
</div>
</div>
<!--END FILE 5-->
<!--FILE 2-->
<div style="margin-bottom:30px; border:2px solid silver; width:550px; border-radius:15px; box-shadow: 5px 5px 2px #888888;">
<div class="upload-textbox" style="padding-bottom:8px; padding-top:8px">
<input type="text" name="title2" placeholder="Title">
</div>
<div class="upload-textbox" style="padding-bottom:8px;">
<input type="text" name="authors2" placeholder="Authors (Ex: Ethan Bise, Jo Cook)">
</div>
<div class="upload-textbox" style="padding-bottom:8px;">
<input type="text" name="description2" placeholder="Description (500 characters)">
</div>
<div class="upload-textbox" style="padding-bottom:8px; display:inline-block;">
<input type="text" name="keywords2" placeholder="Keywords" onfocus="document.getElementById('show_hide2').style.display='inline-block';" onblur="document.getElementById('show_hide2').style.display='none';">
</div>
<div id="show_hide2" style="margin-top:-10px; margin-left:10px; position:absolute; border:2px solid black; border-radius:10px; padding:10px; display:none; background-color:#E68A2E; text-align:left;">
Max: 5
<br>
Example: Mechanical Engineering, Thermodynamics, Machine Design
</div>
<div class="styled-select-upload" style="background:white; margin-bottom:8px;">
<select name="private2">
<option value="Public">Public</option>
<option value="Private">Private</option>
</select>
</div>
<div style="padding-bottom:8px;">
<input type="file" enctype="multipart/form-data" name="uploaded2" style="display: inline-block;">
</div>
</div>
<!--END FILE 2-->
<!--FILE 3-->
<div style="margin-bottom:30px; border:2px solid silver; width:550px; border-radius:15px; box-shadow: 5px 5px 2px #888888;">
<div class="upload-textbox" style="padding-bottom:8px; padding-top:8px">
<input type="text" name="title3" placeholder="Title">
</div>
<div class="upload-textbox" style="padding-bottom:8px;">
<input type="text" name="authors3" placeholder="Authors (Ex: Ethan Bise, Jo Cook)">
</div>
<div class="upload-textbox" style="padding-bottom:8px;">
<input type="text" name="description3" placeholder="Description (500 characters)">
</div>
<div class="upload-textbox" style="padding-bottom:8px; display:inline-block;">
<input type="text" name="keywords3" placeholder="Keywords" onfocus="document.getElementById('show_hide3').style.display='inline-block';" onblur="document.getElementById('show_hide3').style.display='none';">
</div>
<div id="show_hide3" style="margin-top:-10px; margin-left:10px; position:absolute; border:2px solid black; border-radius:10px; padding:10px; display:none; background-color:#E68A2E; text-align:left;">
Max: 5
<br>
Example: Mechanical Engineering, Thermodynamics, Machine Design
</div>
<div class="styled-select-upload" style="background:white; margin-bottom:8px;">
<select name="private3">
<option value="Public">Public</option>
<option value="Private">Private</option>
</select>
</div>
<div style="padding-bottom:8px;">
<input type="file" enctype="multipart/form-data" name="uploaded3" style="display: inline-block;">
</div>
</div>
<!--END FILE 3-->
<!--FILE 4-->
<div style="margin-bottom:30px; border:2px solid silver; width:550px; border-radius:15px; box-shadow: 5px 5px 2px #888888;">
<div class="upload-textbox" style="padding-bottom:8px; padding-top:8px">
<input type="text" name="title4" placeholder="Title">
</div>
<div class="upload-textbox" style="padding-bottom:8px;">
<input type="text" name="authors4" placeholder="Authors (Ex: Ethan Bise, Jo Cook)">
</div>
<div class="upload-textbox" style="padding-bottom:8px;">
<input type="text" name="description4" placeholder="Description (500 characters)">
</div>
<div class="upload-textbox" style="padding-bottom:8px; display:inline-block;">
<input type="text" name="keywords4" placeholder="Keywords" onfocus="document.getElementById('show_hide4').style.display='inline-block';" onblur="document.getElementById('show_hide4').style.display='none';">
</div>
<div id="show_hide4" style="margin-top:-10px; margin-left:10px; position:absolute; border:2px solid black; border-radius:10px; padding:10px; display:none; background-color:#E68A2E; text-align:left;">
Max: 5
<br>
Example: Mechanical Engineering, Thermodynamics, Machine Design
</div>
<div class="styled-select-upload" style="background:white; margin-bottom:8px;">
<select name="private4">
<option value="Public">Public</option>
<option value="Private">Private</option>
</select>
</div>
<div style="padding-bottom:8px;">
<input type="file" enctype="multipart/form-data" name="uploaded4" style="display: inline-block;">
</div>
</div>
<!--END FILE 4-->
<!--FILE 5-->
<div style="margin-bottom:30px; border:2px solid silver; width:550px; border-radius:15px; box-shadow: 5px 5px 2px #888888;">
<div class="upload-textbox" style="padding-bottom:8px; padding-top:8px">
<input type="text" name="title5" placeholder="Title">
</div>
<div class="upload-textbox" style="padding-bottom:8px;">
<input type="text" name="authors5" placeholder="Authors (Ex: Ethan Bise, Jo Cook)">
</div>
<div class="upload-textbox" style="padding-bottom:8px;">
<input type="text" name="description5" placeholder="Description (500 characters)">
</div>
<div class="upload-textbox" style="padding-bottom:8px; display:inline-block;">
<input type="text" name="keywords5" placeholder="Keywords" onfocus="document.getElementById('show_hide5').style.display='inline-block';" onblur="document.getElementById('show_hide5').style.display='none';">
</div>
<div id="show_hide5" style="margin-top:-10px; margin-left:10px; position:absolute; border:2px solid black; border-radius:10px; padding:10px; display:none; background-color:#E68A2E; text-align:left;">
Max: 5
<br>
Example: Mechanical Engineering, Thermodynamics, Machine Design
</div>
<div class="styled-select-upload" style="background:white; margin-bottom:8px;">
<select name="private5">
<option value="Public">Public</option>
<option value="Private">Private</option>
</select>
</div>
<div style="padding-bottom:8px;">
<input type="file" enctype="multipart/form-data" name="uploaded5" style="display: inline-block;">
</div>
</div>
<!--END FILE 5-->
<div style="padding-bottom:20px;">
<input type="submit" name="submitupload" value="Upload" style="display: inline-block;">
</div>
</form>
你知道什么样的阵列有可能吗？ –
是的，我知道我正在使用'$ _FILES ['uploaded'。$ j] ['name']' – user3093592
这个数组从文件中拉取名字，大小等信息。所以，如果你意识到数组的概念，你怎么做像'$ {“title”。$ j}'和'$ _FILES ['uploaded'。$ j]'？当然有更简单的方法来处理所有这些，它不是复制粘贴这么多的代码，只是为了5个文件而变得难以管理。 –