PHP adds the watermark function for image uploading and proportional scaling.

You can add the watermark function by yourself:Copy codeThe Code is as follows:/**** @ Author zhao jinhan* @ Date January 13, 2014 11:54:30* @ Email xb_zjh@126.com**/Header ('content-type: text/html; charset = UTF-8 ');// Define the width and height

Memcache command startup parameters

Copy codeThe Code is as follows:Usr/local/bin/memcached-d-m 128-u root-l 192.168.0.10-p 12121-c 256-P/tmp/memcached. pid -TCP port listened by p (default: 11211)-U udp listening port (default: 11211, disabled when 0)-D run as a daemon-U: the

The filter function in php verifies and filters user input data.

Introduction to PHP FilterPHP filters are used to verify and filter data from unsafe sources (such as user input.Copy codeThe Code is as follows:// Remove html tags or encode special charactersVar_dump (filter_var (" Chinese ABC @ # BBB ",

Php prevents SQL injection sample analysis and regular expressions for several common attacks

Injection Vulnerability code and Analysis Copy codeThe Code is as follows:Function customError ($ errno, $ errstr, $ errfile, $ errline){Echo " Error number: [$ errno], error on line $ errline in $ errfile ";Die ();}Set_error_handler ("customError"

Example of php curl simulating post requests

1. Local Machine: $ Uri = "http://www.jbxue.com/test.php"; // address of your server here// Parameter Array$ Data = array ('Name' => 'tanteng'// 'Password' => 'Password'); $ Ch = curl_init ();// Print_r ($ ch );Curl_setopt ($ ch, CURLOPT_URL, $

Regular Expressions used by php to prevent SQL injection vulnerability code & amp; against several common attacks

Injection Vulnerability code and Analysis Code firstCustomError (, " Error number: [], error on line in " ("customError ", = "'| (and | or) \ B. +? (>||| operation IP Address :". ["REMOTE_ADDR"]. " operation time :". ("% Y-% m-% d % H: % M: % S ").

How to generate Baidu Site Map

Copy codeThe Code is as follows:Function sitemapxml (){$ User = M ('sethouse'); // thinkphp Data Link$ Today = date ("Y-m-d", time ());$ Yesterday = mktime (0, 0, 0, date ("m"), date ("d")-1, date ("Y "));$ Lastweek = strtotime ("-1 week ");$ Link =

Php Data Type Conversion

PHP does not need (or does not support) Explicit Type Definitions in variable definitions. variable types are determined by the context in which the variable is used. That is to say, if a string value is assigned to the variableVar,VarIt becomes a

Php retrieves keywords from Baidu search to enter the website

Code: Function search_word_from (){$ Referer = isset ($ _ SERVER ['HTTP _ referer'])? $ _ SERVER ['HTTP _ referer']: '';If (strstr ($ referer, 'Baidu. com') {// baiduPreg_match ("| baidu. + wo? R? D = ([^ \ &] *) | is ", $ referer, $ tmp );$ Keyword

Analysis on the principle of dragging on a JavaScript page

The basic principle of drag is to move the dragged element based on the movement of the mouse. The movement of the mouse is the change of x and y coordinates. The movement of elements is the change of top and left of style. position. Of course,

PHP extension curl and regular expression easily collect news

Collection is no longer a new term. many webmasters are dedicated to the lack of manpower to help their websites, for example, my personal website www.xxfsw.com has also collected a large amount of news. what if so? Today Collection is no longer a

Php Webservice communication

WebService is a new web application branch. it is a self-contained, self-describing, and modular application that can be released, located, and called through the web. WebService can execute any function from simple requests to complex business

Simple php code for encryption and decryption

How to implement encryption in php and how to implement decryption. It is actually very simple. Php has many functions for everyone. Today, I will write a simple piece of code for you. How to implement encryption in php and how to implement

Chinese encoding conversion class, supporting utf, gbk, and big conversion

The author of simplified and traditional conversion of utf, gbk, and big is unknown. I forgot my website because I have no post on the original code. sorry. /** * Name: Chinese * Version: 0.2.1 Beta * Copyright: None. you can use it whenever you

PHP simple collector creation

A collector, also known as a thief program, is mainly used to capture others' webpage content. It is not difficult to create a collector, that is, to remotely open the webpage to be collected, and then use a regular expression to match the required

Install and use the phpXdebug debugging extension.

When downloading the xdebug extension, pay attention to the correspondence between the xdebug version and the php version, otherwise there will be unnecessary trouble! When installing and downloading Xdebug extensions in xdebug, pay attention to the

Usage of foreach () loop in PHP

Here, array_name is the name of the array to be traversed. in each loop, the value of the current element of the array_name array is assigned to $ value, and the downloading inside the array is moved one step down, that is, the next element is

Detailed parsing of PHP Data sending process to MySQL

Because we use the form GET method, data is transmitted to submitform. php3 through URL. Obviously, the GET method has limitations. when there is a lot of content to be passed, you cannot use GET, but you can only use POST method. However, no matter

A simple lottery probability function

This function is mainly used to determine the probability range of the generated random number. A simple lottery probability function: /*** Simple lottery probability function * @ param array $ rewardArray probability, for example: $ rewardArray =

Php obtains the first letter of the Chinese character string.

I have previously created a page for getting the first letter of the keyword pinyin. below I will post the code for php to get the first letter of the string Pinyin: I have previously created a page for getting the first letter of the keyword pinyin.

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