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Php can be used to obtain the file suffix. I have talked a lot about how to get the extension name of a file. Today, we will summarize how to use different functions to obtain the extension name. if you need it, refer to section 1, I have talked a lot about how to get the file extension in php before. today we will summarize how to use different functions to obtain the extension. if you need it, please refer to it. One, php explode function, function usage reference http://www.bKjia.

+ ([-.] w +) */; // Match EmailIf (email = ''|! Preg. test (email )){$ ("# Chkmsg" cmd.html ("Enter the correct email address! ");} Else {$ ("# Sub_btn"). attr ("disabled", "disabled" ).val('submit..'hangzhou.css ("cursor", "default ");$. Post ("sendmail. php", {mail: email}, function (msg ){If (msg = "noreg "){$ ("# Chkmsg" cmd.html ("This email has not been registered! ");$ ("# Sub_btn"). removeAttr ("disabled"). val ('submit your CSS ("cursor", "pointer ");} Else {$ (". Demo" ).html ("" + ms

PHP code 301 jump page instance. The 301 jump tells the visitor that the page has always reached a new page. in php, we use the 301 jump function to send the 301 status code to the browser, then, the page jump 301 will tell the visitor that the page has always arrived at a new page. in php, we use the 301 redirect function to send the 301 status code to the browser, then you can jump to the page. PHP code-only jump The code is as follows: Header ("Location: h

search engine significantly reduced its trust in the website. -- This problem exists in many websites: The 404 page returns the 200 or 302 status code instead of the 404 status code.Therefore, the following code is added in the 404. aspx file: The Code is as follows: Copy code Protected void Page_Load (object sender, EventArgs e){Response. Status = "404 Not Found ";} By using httpwatch, we can find that 404 status code is returned correctly when you access a page

Before discussing the json format, let's briefly recall the XML. XML is short for "Extensible Markup Language". It provides a method to define a series of data transmission protocols on the Web, which is text-based, it is hailed as "an ideal way to fully develop the potential of the Internet and Web ". Asp tutorial. net ajax json getting started tutorial and detailed instance json Introduction Before formally discussing the json format, let's briefly recall the xml. Xml is short for "Extensible

PHP implements 301 permanent redirection. This article introduces how PHP implements 301 permanent redirection to direct a domain name without www to a domain name with www. When your site domain name changes or the webpage address changes (this article describes how to implement 301 permanent redirection in PHP to direct a domain name without www to a domain name with www. When your site domain name changes or the webpage address changes (the webpage storage directory or the webpage file name c

follows: $ Pangbu = "pangbu "; Function demo (){ Global $ pangbu; Echo $ pangbu;} Demo ();?> Explanation In fact, global $ pangbu; is short for $ pangbu = $ _ GLOBAL ['pangbu, $ Pangbu is a reference of $ _ GLOBAL ['pangbu ']. As for how to use the reference, $ pangbu is used.Some of your own notesI have never understood the usage of global before. although I can use it, I have been confused in Zookeeper. now I finally understand it.. For more information about Glo

Mysql php combination is very popular now. Next we will summarize several methods for creating mysql databases. Because it is very simple to create databases, let's talk about it quickly, Now we are very popular with mysql tutorials and php tutorials. Below we will summarize several tutorials on mysql database creation. As database creation is simple, we will give you a quick introduction, Method 1: Use the mysql command mode Mysql> create database dbname; In this way, the database dbna

We have discussed how to create a view. In this tutorial, we will discuss how to modify and update the mysql view. We have discussed how to create a view. Today we will talk about this tutorial.Mysql tutorial View. View Modification. Syntax: Alter [algorithm = {undefined | merge | temptable}] view view_name [(collist)] as select [with [case | local] check option] Let's create a simple view first. Create or replace view 111 cnNet as select * from net111 where id = 5; The above is

Yesterday I encountered a problem. In Linux, there was a folder containing a large number of Cache files (folders), which may be in the order of millions. The deletion time using rm-rf./* was too slow to be unacceptable. Google found a method, which is indeed an order of magnitude faster than simply using rm. For the method, see: 1) create a blank folder first. Mkdir/tmp/www. bKjia. c0m 2) use the following statement to delete files quickly. Rsyn

I don't want to talk about the difference. I can see the above instance. I mainly want to know the difference between mysql_select_db and I don't recommend using this function since PHP 4.0.6 in terms of performance. Do not use this function. Replace it with mysql_select_db () and mysql_query (). What is the difference between mysql tutorial _ db_query and mysql_query? Mysql_db_query/*Mysql_db_query Syntax: int mysql_db_query (string database, string query, int [link_identifier]);The mysql_db_qu

In mysql, the difference between char and varchar is used to store strings, but their storage method is different. char has a fixed length, and varchar belongs to the variable length character type. InDifferences between char and varchar In the mysql tutorialThey are all used to store strings, but their storage methods are different. char has a fixed length, and varchar is a variable-length character type. Differences between char and varchar Char (13) is fixed in length. For example, the storag

', 'w', 'ww ');-> 'Wwwwww .mysql.com'This function is multi-byte secure. Mysql replacement function 2 Mysql replace function is required for data conversion! For example, you want to replace the abc of the f1 field in Table tb1 with def. Update tb1 set f1 = replace (f1, 'abc', 'def '); Replace (str, from_str, to_str)All the from_str strings in the str string are replaced by to_str, and the following string is returned:Mysql> select replace ('www .mysql.com ', 'w', 'ww ');-> 'Wwwwww .mysq

. test (Left (u, 4) then response. redirect ("http://www.bKjia. c0m") end if%> Asp.net checks whether the website is accessed by pc or mobile phone user code The Code is as follows: Copy code Dim u As String = Request. ServerVariables ("HTTP_USER_AGENT ")Dim B As New Regex ("(android | bbd + | meego ). + mobile | avantgo | bada/| blackberry | blazer | compal | Eline | fennec | hiptop | iemobile | ip (hone | od) | iris |

JQuery fade-in and fade-out can automatically switch the magic light plug-in. The prototype is a magic light effect written a few days ago, because a small bug gets stuck for two days, and then clears the previously written code, I have written a new thought. Usage1. Introduce the jquery library file and the jquery. ifadeslide. pack. webpage special effect plug-in file (if other js files exist on the page, merge them to reduce http requests), and introduce location customization;Http://www.bKjia

Jquery tutorial (learn jquery in seven days) HomepageJquery online help manualHttp://www.bKjia. c0m/jquery/Jquery manual downloadHttp://down.bKjia. c0m/down/help/jquery/index.html This article is the first jquery tutorial, if you are not familiar with this ajax framework, please first look at the http://www.bKjia. c0m/ajax-framework/ Window. onload () is a tou

cancellation Do you still remember isset and unset functions? These two functions implement session detection and cancellation respectively. The isst function is used to check whether a session already exists. The syntax is as follows: Bool isset ($ _ SESSION ['session _ name']) For example: The code is as follows: Session_start ();If (isset ($ _ SESSION ['keyword'])Echo $ _ SESSION ['keyword'];ElseEcho "www. bKjia. c0m