PHP Prevents SQL injection

Release Time:9 months agoHeat:816 ℃Number of comments:1Three functions:Addslashes ($string): Use a backslash to refer to a special character in a string ' "\$username =addslashes ($username);Mysql_escape_string ($string): Use backslashes to escape

A leaf image drawing example generated by PHP only

This article mainly introduces a Leaf Image drawing example generated by PHP, hoping to help some friends who use PHP for image programming. Effect: Tip: save it to the PHP file and paste it in the browser to

How does PHP obtain a set of keys in a two-dimensional array?

PHP obtains a set of keys in a two-dimensional array. This article shares the code. It also shows some "Daniel" code at work for sharing. Specifically, for example, the next two-dimensional array is read from the database. Code list: The code is

PHP + Memcache total wordpress access count (non-plug-ins)

This article mainly introduces the total number of wordpress accesses implemented by PHP + Memcache, which is directly written in the topic functions. php. it is not a plug-in. if you need it, refer to WordPressmemcache. I have written a blog post,

Php + mysql unlimited classification instances without recursion (non-recursion)

This article mainly introduces php + mysql unlimited classification instances that do not require recursion, with a focus on non-recursion. For more information, see how to implement unlimited classification, recursion is generally the first and

PHP only allows access from specified IP addresses (allow * wildcard characters to Filter IP addresses)

Today, a friend asked me how to allow access from only the specified IP address and prohibit access from other ip addresses by default. what I previously shared in my website is how to restrict access from the specified ip address, you can refer to

Destoon how to display the number of supply, enterprise, and information items on the home page

This article describes how to use destoon to display the number of supply, enterprise, and information items on the homepage. it is very useful in template development, if you need it, you can refer to destoon to display the number of supply,

When ThinkPHP2.0 reads MSSQL, the system prompts incorrectsyntaxnearthekeyword'

This article mainly introduces ThinkPHP2.0 reading MSSQL prompt Incorrectsyntaxnearthekeyword ThinkPHP The problem code is as follows: query('select top 10 * from f_city'); dump($test); */ $CityModel = M('city'); $CityModel->find();

Example of PHP obtaining the MD5 value of a file and determining whether the file has been modified

This article describes how to obtain the MD5 value of a file in PHP and determine whether the file has been modified. MessageDigestAlgorithmMD5 (the fifth version of the message digest algorithm in Chinese) this is a hash function widely used in the

CodeIgniter template engine instance

This article describes how to use the CodeIgniter template engine. For more information, see the CI framework. I. example: Codeigniter is usually used for loading: $this->load->view('about', $data); Through this class library, you can load a

Php uses function_exists to check whether a function exists.

This article mainly introduces how to use function_exists to check whether a function exists in php. The example shows how to use function_exists to check whether a function exists and call related techniques in php, which is of great practical

Alternative to php function overloading-explanation of pseudo-reloading

For a weak type language, PHP function overloading is not as common as OOP. However, the weak types are not differentiated, so they cannot be implemented through these methods. However, you can use the following method to implement simple

Learning regular expressions in php

In short, regular expressions are a powerful tool for pattern matching and replacement. We can find ta in almost all UNIX-based tools. In addition, client scripting languages such as JavaScript are also supported. The regular expression has exceeded

Php stealth character 65279 (BOM header of UTF-8)

This article mainly introduces the solution to the problem of invisible character 65279 in php, which is actually the BOM header of the UTF-8 file. This article provides a small program to delete the BOM header of the php file, for more information,

Explanation of mutual conversion between IP addresses and integer numbers in PHP

This article describes how to convert IP addresses and integer numbers in PHP. This article introduces the use of ip2long and long2ip functions in PHP and their bugs, finally, two algorithms are provided by myself. if you need them, you can refer to

Two popular PHP encryption and decryption tools ZendGuard and iconCube

This article mainly introduces two popular PHP encryption and decryption tools ZendGuard and iconCube. This article also provides an iconCube installation tutorial, for more information about PHP encryption and authorization software, see the

Example of file_get_contents high latency usage in PHP

This article mainly introduces file_get_contents high-latency usage in PHP, including timeout restrictions and POST implementation usage. For more information, see the following example to describe file_get_contents advanced usage in PHP, share it

Improvement of PHP + jQuery registration module (1): Saving the verification code to the SESSION

This article mainly improves the model of the previous article, writing the verification code into the SESSION instead of returning the text of the verification code to the hidden domain of the client. Otherwise, the meaning of the verification code

Php custom apk installation package instance

This article mainly introduces the php user-defined apk installation package method. it is very useful to implement this function through the ZipArchive class, for more information about how to use the php custom apk installation package, see the

PHP Unit test environment installation in Windows PHPUnit graphic tutorial

This article describes how to install the PHP Unit test environment PHPUnit in Windows. follow the instructions in this article to install PHPUnit in Windows, for more information, see 1. download the php zip package and configure php. ini, the

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