Question

谁能帮我看一下为什么上传文件后找不到文件储存的位置

<?php
/*
* 上传文件
*/
if (is_uploaded_file($_FILES['upfile']['tmp_name'])){
$upfile=$_FILES["upfile"]; // 文件的判断函数
$name = $upfile["name"];
$type = $upfile["type"]; //文件的重新定义
$size = $upfile["size"];
$tmp_name = $upfile["tmp_name"];
$error = $upfile["error"];

switch ($type) {
case 'image/pjpeg' : $ok=1;
break;
case 'image/jpeg' : $ok=1;
break;
case 'image/gif' : $ok=1;
break;
case 'image/png' : $ok=1;
break;
}
if($ok && $error=='0'){
echo "上传成功";
}
}

?>
<form action="" enctype="multipart/form-data" method="post" name="upform">
上传文件:
<input name="upfile" type="file">
<input type="submit" value="上传"><br>
</form>

Answer 1

文件上传之后会临时存储，一旦没有进行移动，脚本执行结束，临时文件被删除

if(!empty($_FILES['upfile']['name'])){
	if($_FILES['upfile']['error']>0){
		switch ($_FILES['upfile']['error']){
			case 1:
				$errorMsg = "xxxx";
				break;
			case 2:
				$errorMsg = "xxxxx";
				break;
			case 3:
				$errorMsg = "xxxxx";
				break;
			case 4:
				$errorMsg = "xxxx";
				break;
		}	
		echo $errorMsg;
		exit;
	}else{		
		$type = array('.jpg','.png','.gif','.bmp');
		$upFileType = strtolower(strrchr($_FILES['upfile']['name'],'.'));
		if(!in_array($upFileType, $type)){
			echo "<script>alert('类型不支持');history.go(-1);</script>";	
			exit;
		}
			
		$dirName = 'upload/'.date('ymd');
		if(!is_dir($dirName)){
			mkdir($dirName,true);
		}
		if(is_uploaded_file($_FILES['upfile']['tmp_name'])){
			$toFileName = $dirName.'/'.time().'_'.mt_rand(10,300).$_FILES['upfile']['name'];
			if(move_uploaded_file($_FILES['upfile']['tmp_name'],$toFileName)){
				echo "<script>alert('上传成功')</script>";
			}else{
				echo "<script>alert('上传失败')</script>";
			}
		}else{
			echo "<script>alert('不是上传文件')</script>";
		}
	}
	
}else{
	echo "<script>alert('未上传');history.go(-1)</script>";
}

Answer 2

上传用move_uploaded_file 具体参数看手册··