PHP Tutorials

Methods for migrating data from Microsoft SQL Server 7.0 to MySQL Zhbforce Presumably everyone likes to use Word typing, calculate and plan with Excel, PowerPoint slides to show ..., but this only uses a small part of the Office family of features.

The Microsoft SQL Server database server can save images and large amounts of text in a SQL database. The data types used for pictures and text are image image types and text text types, respectively. If using VB or VC to develop front-end

Php+ajax User Registration Verifies whether the user is in storage (PHP MySQL full instance) This is a complete Php+mysql+ajax user Registration instance program, can provide detection of whether the user name is registered, so as to enhance the

This article describes a simple deletion of the database records when the current page is refreshed, this is not implemented with Ajax, but with a Get method to refresh the current page, this method in the actual application of the user experience

PHP generates Excel file source code PHP tutorial generates Excel file source code Class excel{ /*** Header of the Excel file (prefix line)** XML specifications copied from Excel.** @ Access Private* @ Reactive string*/var $header = "

PHP saves uploaded images to the database and displays the code PHP Tutorials Save uploaded diagrams to the database tutorial and display the codeConnect to Database $errmsg = ""; if (! @mysql tutorial _connect ("localhost", "root", "")) { $

You can speed up the INSERT operation by executing several statements together after the lock table: LOCK TABLES a WRITE; INSERT into a VALUES (1,23), (2,34), (4,33); INSERT into a VALUES (8,26), (6,29); UNLOCK TABLES; The benefit of this

MySQL allows the storage results to be paged out for complex queries. It seems that there are few people talking about paging, are we all addicted to limit m,n?In the case of an index, the limit m,n speed is sufficient, but when searching for

Often see someone ask, MSSQL occupied too much memory, but also constantly grow, or have set up the use of memory, but it does not use so much, what is the matter? First, let's take a look at how MSSQL uses memory. The biggest overhead is typically

unlink function in PHP is to delete the file, but we can determine whether the file has delete permissions, let me give you a brief introduction to the Unlink function usage and permission to judge. Unlink ($file) Example 1 The code is

4. Query the maximum sorting problem of data (only one statement is written) CREATE TABLE Hard (qu Char (one), CO char (one), je Numeric (3, 0)) INSERT into hard values (' A ', ' 1 ', 3) INSERT into hard values (' A ', ' 2 ', 4) INSERT into hard

In PHP array is a very special type of array can store various types of data, below I will describe the array read and delete some instances of the specified element. Array: Arrays Offset: Specifies the starting position of the element to be removed.

How to reduce the MSSQL log file is a recurring problem, but this problem in the elite area has a lot of answers, I will not repeat here. Now let's talk about the fundamental problem of how to make log files grow no longer. Let's introduce a simple

4. Database connection With PHP you can easily connect to a database, request data and display it in your Web site, or even modify the data in your database. MySQL is a very popular database, and there are many tutorials on the internet for PHP and

Microsoft®sql Server™ allows you to create a link to an OLE DB data source called a linked server. After linking to the OLE DB data source, you can: References a rowset from an OLE DB data source as a table in a Transact-SQL statement. Passes the

1. What is PHP? PHP is a great tool for developing dynamic Web sites. 2, PHP easy to learn?Very easily, as long as you grasp a little C or C base. 3, why choose PHP?Speed, easy to get started, templates, etc. 4. What does PHP mainly learn?Templates

The function is judged whether it is a valid postal code (fixed length), the method is simple to use regular to operate. The code is as follows Copy Code Function name: checkpost ($C _post)Function: Determine whether it

Sorting array Values Besides I can use the various sorts of methods taught by the teacher, our PHP directly gives you a function rsort () function, the usage is very simple, but only suitable for the array ah. Rsort (Array,sorttype) Parameter

In PHP, the data query can classify a one-dimensional array lookup, and multidimensional array lookup, if it is a simple one-dimensional array we can directly use In_array, Array_search and the history of the example, if it is a multidimensional

Download the file in PHP we use the most is directly using the ReadFile () function, ReadFile () can implement the server source files to download, let me introduce ReadFile download file methods and performance introduction Example 1