PHP

Can Sessions in php only use sessioncookies? The following small series will introduce you in detail, if you need a friend, refer to the session in php. the client cookie can be used by default (to distinguish it from a cookie in the general sense,

This article combines the urldecode and base64_encode functions in php, and then uses the replacement function you have written to safely pass url Chinese characters and special dangerous characters, if you want to transfer Chinese characters or

The following is a detailed analysis of the csv file reading, writing, and output downloading operations in php. if you need a friend, refer The code is as follows: $ File = fopen('text.csv ', 'r '); While ($ data = fgetcsv ($ file) {// read the

The following describes how to use php to read the file header and determine the file type. it supports image, rar, exe, and other suffixes, if you need a file, you can refer to the php code below to read the file header to determine the file type,

This article introduces PHP constructor, destructor, and this keyword. if you need this keyword, refer to section 1. what is constructor? Constructor is a special class method. its main function is to complete initialization of new objects.

This article mainly judges the source based on the referfer and jumps to the page to avoid Page access failure. the user experience is poor. for example, I developed a yellow page source code and switched it. Previously set a demo program address:

This article is a program for practicing PHP heap sorting with everyone. The code is as follows: // Heap sorting application Class heapsort { Var $; Function setarray ($ a) // retrieves an array { $ This-> a = $; } Function runvalue ($ B, $ c) // $

Next we will learn how to implement a custom iterator, and then start to understand the internal working principle of the iterator. Let's take a look at an official example. The code is as follows: Class myIterator implements Iterator { Private $

This article lists common data types in PHP. if you are interested, refer to PHP Data types. PHP supports eight primitive types ). Four scalar types: String (string) Integer) Float (float, also double) Boolean (boolean) Two composite types: Array)

Code sharing of online conversion tools for php Unicode encoding and decoding The code is as follows: Function unicode_encode ($ name) { $ Name = iconv ('utf-8', 'ucs-2', $ name ); $ Len = strlen ($ name ); $ Str = ''; For ($ I = 0; $ I { $ C = $

This article mainly introduces the specific implementation of PHP in the city where the IP address is obtained. if you need it, refer to the file directory: IpLocation----- Qqwry---------- QQWry. Dat----- IpCity. class. php IpCity. class. php file

This article provides a detailed analysis of PHP's methods for obtaining the current url. if you need a friend, refer to the following, I hope to help you. Today, we will introduce the specific methods for PHP to obtain the function of the current

This article describes how to connect Drupal7 to multiple databases, how to operate instances, and how to solve common problems. For more information, see Drupal If you encounter these problems:1. how does Drupal Connect to multiple databases?2.

This article mainly introduces the differences and selection suggestions of eAccelerator, memcached, xcache, APC, and other four acceleration and cache extensions in PHP. if you need them, you can refer to your VPS colleagues, after LNMP and other

In php, there is a function that comes with the system to calculate the file size, that is, filesize (), but this function is in bytes. in some cases, we need to intuitively understand the size of a file, not only the unit of Byte B, but also the

This article mainly introduces PHP batch delete, clear the UTF-8 file BOM header code instance, need friends can refer to remember to run the code before the file backup Oh, to avoid failure. Code 1: The code is as follows: Function checkBOM ($

Returning the remainder of PHP integers is still a headache for beginners with insufficient programming experience. I hope that through the content introduced in this article, you can fully understand this solution. Although the PHP language is

This article describes the introduction and use of the PHP function getenv. the getenv function is mainly used to obtain the value of an environment variable. common PHP probe programs use the getenv function, for more information, see getenv (PHP 4,

This article mainly introduces the functions and examples of JS exception handling, that is, try .. catch statement. For more information, see the following common sense: when a JavaScript script is executed in a browser, when a script error occurs

This article introduces a php shopping cart code, which provides complete functions, such as shopping cart, ordering person information, and membership price. it is still good. if you need it, refer to section 1. product display page The code is