PHP

Php global variables over global variables, php global variables Php has many super global variables, which means they are available in all scopes of a script. You can access functions or methods without performing global $ variable. These super

PHP database operation 3: redis Usage Analysis, php database redis usage This article describes how to operate redis in a PHP database. We will share this with you for your reference. The details are as follows: Although memcache is easy to use, it

Added the Image Upload watermark function (php Code) to the Kindeditor editor ), KindEditor is an open-source online HTML editor. developers can use KindEditor to replace the traditional multi-line text input box (textarea) with a visualized rich

Example of cosine similarity algorithm calculated by the PHP Data analysis engine, cosine of Data Analysis This example describes the cosine similarity algorithm calculated by the PHP Data analysis engine. We will share this with you for your

Php extension php-redis installation and use, php extension php-redisI. redis Installation 1. Install the redis version. Download Page: https://redis.io/download Install an old version 3.2.11: http://download.redis.io/releases/redis-3.2.11.tar.gz 2.

PHP Opcache Acceleration This article describes how to use PHP Opcache acceleration. The details are as follows: Introduction For PHP versions later than 5.5, you can use opcache of PHP to enable performance acceleration (disabled by default ). For

PHP serialization and deserialization principles, and php serialization principles 0. Preface Object serialization and deserialization are not described in detail. The serialization result in php is a php custom string format, a bit similar to json.

1. the definition of slow query refers to all SQL statements that have been executed beyond the time threshold set by long_query_time. Slow query logs are the logs that record these SQL statements. 2 enable slow query log find mysql configuration

In php, the current () function returns the current element (unit, which is the first element of the array. the next () function points the internal pointer to the next element in the array, and output the value of this element. The reset ()

In php, the phpfwrite () function is used to write files (which can be safely used for binary files ). Simply put, add new content to a file. This article collects and summarizes several summary about the usage of fwrite () functions in php writing

This is the notes for calling interfaces using PHP-Java-Bridge when I am working on the development of Ping An Bank and using the PHP environment. Because the tutorials on the Internet are basically useless, I can post the latest online version ()

This article mainly introduces the encryption and decryption functions in PHP and DES encryption and decryption, and analyzes the principles and application methods of common PHP encryption and decryption algorithms encrypt and DES encryption and

This article mainly introduces how to obtain the length of multi-dimensional array by count in php. The example analyzes the principle of array and summarizes the calculation method of array length, which is of great practical value, for more

This article describes how to hide the last two digits of an IP address in php as asterisks. it is a practical technique to use the regular expression matching method, for more information about how to hide IP addresses in php, see the example below.

This article describes how to convert xml and mysql data in php. the instance encapsulates a class file to convert XML and MySQL data, it has some reference value. if you need it, you can refer to the following example to describe how to convert xml

This article mainly introduces the database connection methods in php, pdo and mysqli, which have been compared and analyzed in various aspects. it is very comprehensive. we recommend this article to you and you can refer to it as needed. 1) overall

This article mainly introduces some methods of exception handling in PHP. Although PHP is not a good language, its related technologies are still being improved, you can refer to every new feature to create an exponential random number when you add

This article mainly introduces the method of sending mails using the mail class library that comes with pear in PHP. The example analyzes the installation of pear and the implementation skills of mail, which is very simple and practical, for more

This article mainly introduces php's anti-CC attack code and php's prevention of frequent page refreshing, and quick and malicious page refreshing. cc attacks use proxy servers to generate legitimate requests directed to the target site, simulate a

This article describes how to add the iconv module for php in linux. For more information, see. /configure -- with-mysql =/backup/mysql -- with-freetype-dir -- with-jpeg-dir -- with-png-dir -- with-zlib -- with-curl --- gd -- enable-gd-native-ttf --