【发布时间】：2013-11-09 02:55:00
【问题描述】：
大家好，我的代码真的很吃力。当我尝试上传多张图片时，它会上传同一张图片 5 次，而不是同时上传两张图片。任何帮助表示赞赏。 感谢您的宝贵时间。
这里是 var_dumb($_FILES)
array(1) {
["userfile"]=>
array(5) {
["name"]=>
string(9) "test1.jpg"
["type"]=>
string(10) "image/jpeg"
["tmp_name"]=>
string(14) "/tmp/phpdDGCy2"
["error"]=>
int(0)
["size"]=>
int(1768037)
}
}
这是我的上传功能：
if(count($_FILES['userfile'])){
foreach($_FILES['userfile'] as $file){
$alt=mysqli_real_escape_string($conn, $_POST['alt']);
echo '<pre>';
var_dump($_FILES);
echo '</pre>';
if (($_FILES["userfile"]["error"] == 0) && ($_FILES['userfile']['size'] > 0))
{
$fileName = $_FILES['userfile']['name'];
$tmpName = $_FILES['userfile']['tmp_name'];
$fileSize = $_FILES['userfile']['size'];
$fileType = $_FILES['userfile']['type'];
}
$allowedExts = array("jpg", "jpeg", "gif", "png");
$extension = end(explode(".", $_FILES["userfiles"]["name"]));
if((($_FILES["userfile"]["type"] == "image/gif")
||($_FILES["userfile"]["type"]=="image/jpeg")
||($_FILES["userfile"]["type"]=="image/png")
||($_FILES["userfile"]["type"]=="image/pjpeg")
&& in_array($extension, $allowedExts)))
{
$fp = fopen($tmpName, 'r');
$content =fread($fp, filesize($tmpName));
$SourceImage = imagecreatefromstring($content);
$SourceWidth = imagesx($SourceImage);
$SourceHeight=imagesy($SourceImage);
$DestWidth=100;
$DestHeight=130;
if ($SourceHeight> $SourceWidth)
{$ratio = $DestHeight / $SourceHeight;
$newHeight = $DestHeight;
$newWidth = $sourceWidth * $ratio;
}
else
{
$ratio = $DestWidth / $SourceWidth;
$newWidth = $DestWidth;
$newHeight = $SourceHeight * $ratio;
}
$DestinationImage = imagecreatetruecolor($newWidth, $newHeight);
imagecopyresampled($DestinationImage, $SourceImage, 0,0,0,0,$DestWidth, $DestHeight, $SourceHeight, $SourceWidth);
ob_start();
imagejpeg($DestinationImage);
$BinaryThumbnail = ob_get_contents();
ob_end_clean();
$thumb = addslashes($BinaryThumbnail);
$content = addslashes($content);
fclose($fp);
$fp = fopen($tmpName, 'r');
$content = fread($fp, filesize($tmpName));
$content = addslashes($content);
fclose($fp);
mysqli_query($conn, "INSERT INTO files (username, name, size, content, type, link, alt, thumbnail) VALUES ('$username', '$fileName', '$fileSize', '$content', '$fileType', 1, '$alt', '$thumb')") or die('Error, query failed');
echo "<script>alert('The file has been uploaded');location.replace('uploaded.php');</script>";
unlink ($_FILES['username']['tmp_name']);
}else{
echo "<script>alert('Please upload an image');location.replace('upload.php');</script>";
}
}
}
}
这是上传表格：
<div class="container">
<div class="row">
<div class="col-md-6 col-md-offset-3">
<h1>Upload a file</h1>
<form method="post" enctype="multipart/form-data" action="process.php">
<div id="filediv">
<div id="imagefiles">
<input type="hidden" name="MAX_FILE_SIZE" value="2000000">
<label>Upload File:
<input name="userfile[]" type="file" id="userfile" multiple></label>
<label>Alt Text: <input name="alt" type="text"></label>
</div>
</div>
<br>
<input type="button" value="Add Another File" onclick="copyDiv()"/>
<input name="UploadFile" type="submit" />
</form>
【问题讨论】：
-
你引用
$_FILES['userfile']['name']inside 你的 foreach 循环；您需要将所有这些引用替换为$file，因为其中包含您当前正在使用的变量。 -
所以我做 $fileName = $_FILES $file; $tmpName = $_FILES $文件； $fileSize = $_FILES $file; $fileType = $_FILES $file; ?对不起，我不明白。
-
你的 foreach 循环遍历文件数组；所以你需要
$file['name'];，而不是$_FILES['userfile']['name'];，等等。
标签： php file-upload