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PHP 图片上传实现代码 带详细注释_php实例

WBOY
Release: 2016-05-17 09:26:00
Original
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复制代码 代码如下:

//用户上传图片处理文件
if ((($_FILES["file"]["type"] == "image/gif")|| ($_FILES["file"]["type"] == "image/jpeg")|| ($_FILES["file"]["type"] == "image/pjpeg"))&& ($_FILES["file"]["size"] if ($_FILES["file"]["error"] > 0){
echo "Return Code: " . $_FILES["file"]["error"] . "
"; //出错返回
}else{
/* //这是上传图片的信息,去掉前后的注释就可以看到效果.
echo "Upload: " . $_FILES["file"]["name"] . "
";
echo "Type: " . $_FILES["file"]["type"] . "
";
echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb
";
echo "Temp file: " . $_FILES["file"]["tmp_name"] . "
"; */
if (file_exists("userupload/" . $_FILES["file"]["name"])){
echo $_FILES["file"]["name"] . " already exists. ";
}else{
move_uploaded_file($_FILES["file"]["tmp_name"],"userupload/" . $_FILES["file"]["name"]);
}

$date=date('Ymdhis'); //得到当前时间,如;20070705163148
$fileName=$_FILES['file']['name']; //得到上传文件的名字
$name=explode('.',$fileName); //将文件名以'.'分割得到后缀名,得到一个数组
$newPath=$date.'.'.$name[1]; //得到一个新的文件为'20070705163148.jpg',即新的路径
$oldPath=$_FILES['file']['tmp_name']; //临时文件夹,即以前的路径
rename("userupload/".$fileName,"userupload/".$newPath);

//这里可以写你的SQL语句,图片的地址是 "userupload/".$newPath

?>

}
}else{
echo "Invalid file"; //图片类型错误或者过大
}
?>
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