Question

php的move_uploaded_file函数，文件上传成功，但总出错误提示

<?php
$file=$_FILES['file_test'];
$tmp_name=$file['tmp_name'];
$file_name=$file['name'];
move_uploaded_file($tmp_name,"./files/".$file_name);
if($error!=0)
exit("文件上传失败0");
if(!move_uploaded_file($tmp_name,"./files/".$file_name)){
exit("文件上传失败1");
}
else{
echo "文件上传成功";
}
?>
运行之后总是输出“文件上传失败1”
bool move_uploaded_file ( string $filename , string $destination )
php的说明上是这么写的啊。有bool型返回值的

Answer 1

if(!move_uploaded_file($tmp_name,"./files/".$file_name)){
exit("文件上传失败1");
}
move_uploaded_file($tmp_name,"./files/".$file_name)已经在前面执行一次了，所以就出现错误。应该改为：
<?php
$file=$_FILES['file_test'];
$tmp_name=$file['tmp_name'];
$file_name=$file['name'];
$result = move_uploaded_file($tmp_name,"./files/".$file_name);
if(!$result){
exit("文件上传失败1");
}
else{
echo "文件上传成功";
}
?>

Answer 2

因为move_uploaded_file()函数是没有返回值的 要判断是否上传成功可以用is_uploaded_file()函数

Answer 3

if($error!=0)
exit("文件上传失败0");
去掉