PHP Tutorials

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File name manipulation In many cases, dynamic inclusion is used, where the directory name or part of the file name is stored in a variable. For example, you can cache some of your dynamic pages to reduce the burden on your database server. In

The examples in this article describe serialization usage in PHP. Share to everyone for your reference, as follows: Function: Serialization is used to store or transmit objects, and this object is obtained by crossdress. 1. Person.class.php: 2.

Remote file risk PHP has a configuration option called Allow_url_fopen, which is a valid option by default. It allows you to point to many types of resources and handle them like local files. For example, by reading a URL you can get the content of

The example in this paper describes the code tool class for PHP encapsulation. Share to everyone for your reference, as follows: width = Isset ($arr [' width '])? $arr [' width ']: $GLOBALS [' config '] [' captcha '] [' width '];

You're not a stranger to TCP/IP, UDP, socket programming. With the development of network technology, these words are filled with our ears. Then I would like to ask: 1. What is TCP/IP, UDP? 2. Where is the socket? 3. What is a socket? 4. Will you

Sometimes we want to collect user input through batch mode. That is, users can enter information for multiple model instances and submit them once. We refer to this as tabular input (tabular input) because these entries are usually rendered as HTML

PHP ajax No Refresh upload image and image download function implementation code is as follows: Specify file name: Upload file: submit.php 0) { echo "failed to upload file"; Die; } $dir = './photo/'; $type =substr

This article mainly introduces PHP using DOM and simplexml to read XML document method, combined with instance form analysis PHP using DOM and simplxml for XML file creation, loading, reading and other related operations skills, the need for friends

Before the session related configuration, in the development, often need to cross-domain common session is the login module, I believe that many development of friends have encountered, only need a place to log in, the associated site is also in the

In the platform development process, the project is divided into the foreground (frontend) www.xxx.com and Backstage (backend) yun.xxx.com two parts, binding two domain names, we know that there is no binding domain name when the front and back can

php zip file comparison class, compare the contents of two zip files, return new, delete, and the same file list. Only one layer is supported for the time being. requirement: upload a zip file with many picture files inside the zip. A series of

The basic usage of PHP regular expressions is described in this article. Share to everyone for your reference, as follows: demo1.php demo2.php demo3.php demo4.php demo5.php The demo6.php demo7.php demo8.php demo9.php demo10.php demo11.php

Database tables typically have a field type of int, which is named the self-increment primary key of the ID. Pros: Use the int type to self-increment and save storage space over character types.Cons: IDs are numeric, and it is difficult to determine

1. Do not use the Mysql_ function This day has finally come, and since then you are not only "shouldn't" use the Mysql_ function. PHP 7 has removed all of them from the core, meaning you need to migrate to a much better mysqli_ function, or a more

The example in this article describes the PHP conversion. Share to everyone for your reference, as follows: can achieve: 10 Binary Conversion 2, 8, 16, 36, 62 binary 2, 8, 16, 36, 62 binary conversion 10-system Note that the 2, 8, and 16

File Upload attack Sometimes in addition to the standard form data, you also need to let users upload files. Since files are transferred in a form different from other form data, you must specify a special encoding method Multipart/form-data: CODE:

Rights statement In the case of non-profit, this translation can be freely transmitted without restriction. Except for a few exceptions to the "preview", the extension functions you have handled so far are simple and only return. However, most

What this section explains Sequential Process Control Single Branch Dual Branch Multi-Branch Switch For While Do...while Break Continue Goto Objective PHP's Process control and other languages are very

First modify the configuration file (config.php) Generates a random, non-repeating string of bits encrypted key saved to config.php Encryption_key $config[' encryption_key ']= ' bf363d0a '; Load Session Class $this->load->library (' Session