Most of the time, because ASM does not start properly, data loss is caused. Here are two ways to retrieve data files from ASM
I. Using the AMDU tool
Amdu is a free tool in Oracle 11g that analyzes the metadata of the ASM Disk group and extracts
The 404 page tells the search engine that the page does not exist and also prompts you to select other operations, next, I will introduce the operation methods for customizing the 404 page in php to my friends who do not have the apache operation
Header () function usage instructions. I. Role :~~~~~~~~~ PHP only sends the HTML document header to the browser using the HTTP protocol to tell the browser how to handle the page. As for the transmitted content, you need to familiarize yourself
Phpheader () function instructions. Header () function usage instructions: 1. function :~~~~~~~~~ PHP only sends the header of the HTML document to the browser using the HTTP protocol to tell the browser how to handle the page. the instructions for
As described in PHPBIBLE by Mr. Peng Wuxing, the header can send the Status header, such? Phpheader (Status: 404 NotFound );? In this way, the user's browser can see the 404 error that the file cannot be found, but I tried this. Later, I checked the
This article introduces how to solve the php header 404 error file garbled. If you encounter such problems, refer.
Usually, when judging a non-existing resource (such as category or product does not exist) through php, you need to return a 404
Instructions for using the header () function:I. role:~~~~~~~~~PHP only sends the HTML document header to the browser using the HTTP protocol to tell the browser how to handle the page. As for the transmitted content, you need to familiarize
In PHP, the use of the header function is very large, the header can not only send the original HTTP header information to the client, but also can directly implement the file download operationThe header function is most commonly used not for
If you have just started learning PHP, there may be many functions that need to be studied. Today we will learn how to use PHP Header (). For more instructions, please refer to the PHP Chinese manual. The following describes how to use the header
I. role:~~~~~~~~~PHP only sends the HTML document header to the browser using the HTTP protocol to tell the browser how to handle the page. As for the transmitted content, you need to familiarize yourself with the HTTP protocol, which is irrelevant
Today, we need to use php to output a 404 error page, and then load the 404 page output. each core code that facilitates user experience with search engines:
Copy codeThe code is as follows:
@ Header ("http/1.1 404 not found ");
@ Header
Code written by php about the crawler record of static pages
$ Useragent = addslashes (strtolower ($ _ SERVER ['http _ USER_AGENT ']);
If (strpos ($ useragent, 'googlebot ')! = False) {$ bot = 'Google ';}
Php defines the implementation code core code of the 404 page:
The code is as follows:
@ Header ("http/1.1 404 not found ");
@ Header ("status: 404 not found ");
Echo 'echo 404 ';
Exit ();
To load the 404 page, you can run the following code:
In phpheader, pay attention to the 301404 redirection. If your webpage shows 301 or 404, it is a very serious problem for the user experience, so we must be careful when doing phpheader301 or 404. let's take a look at it. If your webpage shows 301
In PHP URL jump regardless of that approach can not be separated from the header function, below I will give you some commonly used URL jump implementation procedures and methods, there is a need for friends to refer to.
1.header () function
The
Usually, when judging a non-existing resource (such as category or product does not exist) through php, you need to return a 404 status through the header and display the corresponding 404 page. the method on the previous server is as follows:
I. PreambleCore: Server (Nginx-rtmp-module) + push-to-stream (OBS) + Accept-end (Jwplayer)Second, the service side 1. Download Nginx-rtmp-module ModuleAddress: Https://github.com/arut/nginx-rtmp-module2. Compile and install
404 page is a tell the search engine this page does not exist, but also prompted the user can choose other operations, below I give no Apache operation rights to introduce a friend PHP custom 404 page Operation method.
Method One
The
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