PHP Tutorials

Correctly understand cookies and session mechanisms The difference and connection between cookie and session mechanism in PHP Specifically, the cookie mechanism uses a scheme that maintains state on the client. It is the storage mechanism of

/original program function pinyin ($STR) {//To determine whether it is a single-spell, double-spell, triple-fight $pin _arr = Array ("A", "AI", "an", "Ang", "AO", "ba", "Bai", "ban" , "Bang", "Bao", "bei", "Ben", "Beng", "Bi", "Bian", "Biao", "Bie",

PHP read remote file Several methods summary and the difference analysis. 1.file_get_contents $url = ' http://www.xxx.com/';$contents = file_get_contents ($url);If there is a garbled Chinese use the following code$getcontent = Iconv ("Gb2312

In PHP development, we encounter the cross-domain is mainly tangled in IE, the page iframe or frame or JS cross-domain, IE has a security policy limit pages without cookies, but if we add P3P, there is no restriction of this strategy. This is also

PHP socket to send mail via SMTP (with attachments) Define ("SOL", "\ n");d efine ("EOL", "\ r \ n");d efine ("Smtp_host", "smtp.163.com"),//SMTP Server define ("Smtp_port", "25") ;//smtp Server Port define ("Smtp_user", "" "),//SMTP Server user

This article details PHP's function of getting the image size (width, height), i.e. the getimagesize () function. Grammar: Array getimagesize (string filename [, array &imageinfo]) Function: The getimagesize () function will measure any

1. Try to be static: If a method can be static, then declare it as a static constant, speed can be increased by 1/4, even when I test, this improved by nearly three times times. Of course, this test method needs to be executed at level 100,000 and

PHP Extra Large File download, breakpoint continued download Export order information when a PHP memory overflow problem, the reason is that the download time to read the generated temporary file is too large, PHP memory can not be accommodated, in

Recently, due to project needs, a module needs to be developed, using PHP to export some of the data in the system into Excel, modified and then returned to the system. Take the opportunity to study this, some of the following summary. Basically

The problem with MySQL Error: (2006, ' MySQL server has gone away ') means that the link between the client and MySQL server is broken. The reason for this is generally that the SQL operation takes too long, or that the data being transferred is

Shared memory is an effective way to exchange data between applications in the same machine. A process can create a memory segment that can be accessed by other processes as long as it is assigned the correct permissions. Each memory segment has a

This is a document for beginners of PHP development, so-called beginners, can be defined as: There are no more than 2 languages, in the language skills already learned, can complete the majority of the course exercises. From the general situation of

The difference between method_exists () and is_callable () in PHP This article is the PHP method_exists () and is_callable () of the difference between the detailed analysis, the need for a friend reference PHP function method_exists () and

There are many kinds of functions in the PHP language, different ways of application, and the functions of implementation are not the same. In this paper, we summarize the PHP timestamp function, hoping to be a reference learning object. The PHP

Use grab package software fiddler solve discuz image upload browser compatibility issues The situation before discuz in each browser discuz upload pictures are successful, suddenly one day pictures in IE can not upload correctly, the picture is

1. Preface PHP (beginning with PHP 3.05) provides a set of serialization and deserialization functions for the custodian object: Serialize, Unserialize. But in PHPThe instructions for these two functions are limited to how they are used, and the

Application Example of PHP socket (fsockopen) function Using the Fsockopen function, the first thing to do is to open the allow_url_open=on in php.ini; Fsockopen is the encapsulation of the socket client code, which encapsulates the socket_create ()

PHP implementation of multi-comment real-time synchronization back to the site database Social review-multi-comment real-time synchronization back to the database, relying on the HTTP library, just look for one on the line where ($where)->getfield ('

PHP AES encryption and decryption algorithm !--? php//--------The first AES-CBC encryption scheme--------//for understanding only $cipher = Mcrypt_module_open (mcrypt_rijndael_128, ", MCRYPT_MODE_CBC,"); #128位 = 16 Byte iv must be 16 bytes

PHP has a lot of configuration parameters, here only to do some common parameters of the description. First download PHP source package http://www.php.net Of course, before the installation, you need to install a lot of dependent packages, or