PHP

Look at the POP3/SMTP protocol when you want to try to write a class, the core is nothing, is the use of fsockopen, and then write/Receive data, only to achieve the most core part of the function, as a learning Socket operation of the practicing. It

At the beginning of this article, the author assumes that the reader has been able to write a user's login authentication program. ---------------------------------------------------------- Registers can complete the total number of times to access

The use of arrays in PHP is at least as simple as C, in the general PHP program is rarely used in the concept of the array, with more of the judgment, loop and cookies, but the use of the array of skills is very important, because it can make the

PHP Tutorial memcached installation and use 1. Introduction The Memcache module is an efficient daemon that provides procedural procedures for memory caching and object-oriented Convenient interface, especially when designing dynamic web programs,

? $arr =getimagesize ("Images/album_01.gif"); Echo $arr [3]; $strarr =explode ("" ", $arr [3]); echo $strarr [1]; ?> demo picture and so on scale shrink

Here is a simple example: For example, you can call the following statement in page a.html to pass the parameter action = test to B. php.Javascript code The code is as follows:Copy code There is such a php code in B. PHP:PHP code The code is

Format memory_get_usage () output The code is as follows:Copy code Function convert ($ size ){$ Unit = array ('B', 'KB', 'mb', 'GB', 'TB', 'petab ');Return @ round ($ size/pow (1024, ($ I = floor (log ($ size, 1024), 2 ). ''. $ unit [$ I];} Echo

The code is as follows:Copy code obtain the value of the check box 1 & nbsp; 2 & nbsp; 3 Php code The code is as follows:Copy code Foreach ($ _ POST ['Year'] as $ item ){Echo $ item. " ";}?>

The execution time of a PHP page is relatively long (about 15 seconds). As long as the page has not been executed, other page accesses are in the loading status for a long time, and only the page has been executed, the remaining pages can be

SolutionFirst, change display_errors = on of php. ini to display_errors = off (no error is displayed)Method 2: convert allow_call_time_pass_reference = Off to allow_call_time_pass_reference = OnThe above is to modify php. ini, but if you do not have

Compared with cookies, Session is stored on the server, which is relatively secure and has no storage length limit as Cookie does. This article briefly introduces the use of Session.The Session is stored on the server as a text file, so the client

Once a constant in PHP is defined, it cannot be changed or undefined. Constants have predefined constants (internal constants) and default PHP constants, you can also customize constants.The following are some predefined constants: (For details,

First case: when the subclass does not define the constructor, it inherits by default.Case 2: If the subclass defines the constructor, it will not be inherited.For 4.x, if the parent class exactly defines the function with the same name as the

Once you download other people's source code, you can see countless @ marks and start to think it is a comment. Later, you will find that the @ statements will be executed. Wondering, what is this mark .....With the continuous development of

MethodWhen we use CURL to post data, we need to set post data.Curl_setopt ($ c, CURLOPT_POSTFIELDS, $ post_data );Assume that $ data is$ Data = array ('Name' => 'Www .111cn.net ','Time' => '2014-2-3')Next, you need to convert $ data into a string.$

We know that PHP needs to obtain the opened_path of the file to determine whether a file is loaded, which means, for example: The code is as follows:Copy code Set_include_path ("/tmp/:/tmp2 /");Include_once ("2.php ");?> When PHP sees

After connecting to the code, I don't know if it's a problem with php5.4, or is it like this... The code is as follows:Copy code $ A ['hello'] = '123 ';$ A ['XX'] = NULL;  Var_dump (isset ($ a ['hello']); // bool (true)  Var_dump (isset ($ a

The garbage collection mechanism used before php 5.3 is a simple "reference count", that is, each memory object is allocated with a counter. When the memory object is referenced by a variable, the counter is + 1; when the variable reference is

The setcookie () function is used to set the cookie.Note: The setcookie () function must be located before the tag.SyntaxSetcookie (name, value, expire, path, domain );See the instance below The code is as follows:Copy code // Cancel the

It is very important to accelerate the display of dynamic website content. Through in-depth discussion of several PHP functions, this article proposes a solution for PHP web page compression and buffering.I. Introduce several functions that control