PHP

Copy codeThe Code is as follows:Ini_set ("memory_limit", "50 M"); // required. Try to avoid errors based on the actual environment conditions.Ini_set ("maid", "100 ");// The file_exists () function checks whether a file or directory exists. If yes,

During this period, the login function of our system was modified. In order to be more secure, the mail verification function was added. When a user logs on, he or she determines whether the logon ip address has been previously logged on. If not, he

The declare structure is used to set the execution command of a piece of code. Its syntax structure is as follows:Copy codeThe Code is as follows:Declare (directive)Statement Don't you understand? The general explanation is as follows: declare is

1. mysql_connect ()-establish database connection 2. mysql_pconnect ()-establish database permanent connection 3. mysql_close ()-close Database Connection 4. mysql_select_db ( 1. mysql_connect ()-create a database connection 2. mysql_pconnect

Try to use single quotes instead of double quotes! 1. if the class method can be defined as static, it should be defined as static as much as possible, and its speed will be increased by nearly four times. 2. $ row ['id'] is 7 times faster than $

Many forms use the most things. new users often insert data into the database repeatedly when submitting the form. this is of course not what we want. So how to deal with it? Here are two methods to deal with it! (1) use the javascript script to

The php paging tutorial is as follows: & amp; lt ;? Phpecho & quot; original php Tutorial & quot; // Connect to database $ con = mysql_connect (& quot; localhost & quot;, & quot; root & quot ;, & quot ;); The php paging tutorial is as follows: = $

When using the CI framework, you often encounter jump and Path Problems. site_url () and base_url () are easy to confuse. the differences between them are described below! Assume that the base_url and index_page in your config file are When using

Socket is a transmission protocol that provides asynchronous communication between client servers! Use the fsockopen () function to establish a socket connection. As mentioned above, cURL is a tool for connecting and communicating with various

1. substr (source string, in fact location [, length])-truncate the string and return some strings & amp; lt ;? Php $ str = & quot; phpddt.com & quot; echosubstr ($ str, 2); // pddt. 1. substr (source string, actual position [, length])-truncate the

Php can split the string into an array, and concatenate the array into a string. & amp; nbsp; implode () connection function: & amp; nbsp; this function concatenates an array element into a string. we need to give it two parameters before connection.

If you do not know what ci is, read this article to describe a simple CI framework instance and its running mechanism. The following are the advanced development skills of the CI framework! The php Tutorial is as follows: (1) automatically load the

Zend_Session & amp; nbsp; and Zend_Session_Namespace provide a set of the most reliable and secure session-related processing functions, which are quite simple to use. each Zend_Session_Namespace Zend_Session and Zend_Session_Namespace provide the

Chinese parameters are inevitable during project development, so today I will summarize several methods for passing Chinese parameters! 1. the following parameter passing method: http://www.phpddt.com/index.php/myapp/show/php tutorial Chinese

I failed to load the file for the first time. it turns out that the file name is different from the class name. first, I would like to summarize the considerations for CI loading your own class files: 1. third-party file loading should be placed

First, your system extension class is placed under application/core. Originally, the system core class is CI_Controller, so you cannot start with CI _. you need to open application/config. ph First, your system extension class is placed under

You can see a lot of get_instance () functions in the source code of the next CI framework. This function is used to obtain the global super object of CI, and CI is the framework of Singleton mode, there is a super object globally. Because there is

Because I have to do my graduation design, I am so anxious to take out a small project (developed based on codeigniter) and run it on the fly. this is another mistake: there is output content before the header information... It is actually a curse

For me, I don't like ZendFramework very much, like Symphony. ZendFramework2 has been out for a while and has time to study it. Someone asked me today and read the Zend_Layout usage section. A basic For me, I don't like Zend Framework very much, like

The previous log record the usage of Kohanasession, but uses the default native adapter. if you want to use the database adapter session data to store data in a data table, the configuration is a little complicated. Step 1: enable Datab The previous