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我正在使用的网络服务器上使用PHP时遇到了一些问题。我相信答案是显而易见的，但由于某种原因，它完全躲避了我。
我有一个php文件，它上传了两个文件，一个是客户端的拍摄前和后镜头。我的服务器（localhost）上的脚本工作正常，它上传文件，将文件重命名为时间戳，然后将图像放入文件夹中，以便由另一个脚本进一步排序。
然而，当我将其上传到网络服务器时，有些文件可以工作（即 mel.jpg，test.jpg），但像 IMG_0042.jpg 这样的文件不起作用，我确信答案很简单，但完全躲避了我。
我认为下划线可能与它有关，但无法为我的生活弄清楚，任何帮助非常感谢，非常感谢。
<?php
if(!isset($_COOKIE['auth'])) {
header("Location: login12.php");
exit();
}
$page_title="test";
include('header.html');
// Upload and Rename File
if (isset($_POST['submitted'])) {
$filenamebef = $_FILES["uploadbef"]["name"];
$filenameaft = $_FILES["uploadaft"]["name"];
$file_basename_bef = substr($filenamebef, 0, strripos($filenamebef, '.'));
$file_basename_aft = substr($filenameaft, 0, strripos($filenameaft, '.'));
// get file extention
$file_ext_bef = substr($filenamebef, strripos($filenamebef, '.'));
$file_ext_aft = substr($filenameaft, strripos($filenameaft, '.'));
// get file name
$filesize_bef = $_FILES["uploadbef"]["size"];
$filesize_aft = $_FILES["uploadaft"]["size"];
$allowed = array('image/pjpeg','image/jpeg','image/JPG','image/X-PNG','image/PNG','image /png','image/x-png');
if ((in_array($_FILES['uploadbef']['type'], $allowed)) && in_array($_FILES['uploadaft']['type'], $allowed)) {
if (($filesize_bef < 200000) && ($filesize_aft < 200000)){
// rename file
$date = date("mdy");
$time = date("His");
$timedate = $time . $date;
$newfilenamebef = $timedate . $file_ext_bef;
$newfilenameaft = $timedate . $file_ext_aft;
if ((file_exists("upload/images/before" . $newfilenamebef)) && (file_exists("uploads/images/after" . $newfilenameaft))) {
// file already exists error
echo "You have already uloaded this file.";
} else {
move_uploaded_file($_FILES["uploadbef"]["tmp_name"], "uploads/images/before/" . $newfilenamebef) && move_uploaded_file($_FILES["uploadaft"]["tmp_name"], "uploads/images/after/" . $newfilenameaft);
echo "File uploaded successfully.";
}
}
} elseif ((empty($file_basename_bef)) && (empty($file_basename_aft))) {
// file selection error
echo "Please select a file to upload.";
} elseif (($filesize_bef > 200000) && ($filesize_aft > 200000)) {
// file size error
echo "The file you are trying to upload is too large.";
} else {
// file type error
echo "Only these file typs are allowed for upload: " . implode(', ',$allowed);
unlink($_FILES["uploadbef"]["tmp_name"]);
unlink($_FILES["uploadaft"]["tmp_name"]);
}
}
echo $newfilenamebef;
echo $newfilenameaft;
?>
<form enctype="multipart/form-data" action="uploading.php" method="post">
<input type="hidden" value="MAX_FILE_SIZE" value="524288">
<fieldset>
<legend>Select a JPEG or PNG image of 512kb or smaller to be uploaded : </legend>
<p><b>Before</b> <input type="file" name="uploadbef" /></p>
<p><b>After</b> <input type="file" name="uploadaft" /></p>
</fieldset>
<div align="center"><input type="submit" name="submit" value="Submit" /></div>
<input type="hidden" name="submitted" value="TRUE" />
</form>
<?php
include('footer.html');
?>
你应该在索引顶部的这两行.php或引导.php ：
error_reporting( -1 );
ini_set( "display_errors" , 1 );
看看是否出现一些错误消息。
问题很可能是由错误的文件权限引起的。
快速猜测，我会说您的本地主机不区分大小写，而您的网络服务器则区分大小写。
换句话说，在您的本地主机上，IMG_12345.JPG与img_12345.jpg相同。但是，在您的网络服务器上，它们的处理方式不同。
没有任何实际报告的错误，很难确定，但这是一个常见问题。
您没有正确检查有效的上传。像下面这样的东西会更可靠：
// this value is ALWAYS present and doesn't depend on form fields
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$errmsgs = array();
if ($_FILES['uploadbef']['error'] !== UPLOAD_ERR_OK) {
$errs++;
$errmsgs[] = "'uploadebef' failed with code #" . $_FILES['uploadebef']['error'];
}
if ($_FILES['uploadaft']['error'] === UPLOAD_ERR_OK) {
$errs++;
$errmsgs[] = "'uploadeaft' failed wicode #" . $_FILES['uploadeaft']['error'];
}
if (count($errmsgs) > 0) {
print_r($errmsgs);
die();
}
... process the files here ...
}
同样，为什么要重新发明轮子来拆分文件名？
$parts = path_info($_FILES['uploadaft']['name']);
$basename = $parts['basename'];
$ext = $parts['extension'];