PHP

1, PHP encryption and decryptionPHP encryption and decryption functions can be used to encrypt some useful strings stored in the database, and through reversible decryption of strings, the function uses Base64 and MD5 encryption and decryption.

Here the date action function has an increase in time, calculated the date given is the day of the week, check the date is valid date time comparison function, return two date difference a few seconds, a few minutes, a few hours or a few days

Small VPS is limited by the system resources, the traffic is too large, more than the system can withstand the limit, a part of the request will be 502. In the case of adequate system resources, optimizing NGINX,PHP-FPM, as well as the system itself,

lnmp1.0 the PHP version is 5.3.17 after the default installation. Upgrade php5.3.x and 5.4.X after two cases, and then perform memcache.sh installation The first one is not a problem. The first step, the second is the problem, then the second step

What is polymorphism?polymorphism, which comes from the definition of dictionary.com, "appears in different forms, stages, or types in an independent organization, or in a homogeneous organization, without a fundamental distinction." "By this

The example in this article describes the PHP implementation function that deletes any character in the string. Share to everyone for your reference. Specifically as follows: function Delstr ($start, $end, $orgenStr) {/ /Read the first part

With the progress of science and technology, we often see barcodes and two-dimensional code, especially in the smartphone era, these yards are more active, today I share with you how to use PHP to generate two-dimensional code, as to how to generate

This example describes how PHP uses inverse polish to calculate wages. Share to everyone for your reference. Specifically as follows: The general algorithm for converting an ordinary middle-order expression to an inverse Polish expression is:

This example describes how PHP uses Imagick to generate pictures. Share to everyone for your reference. Specifically as follows: Use Imagick to generate pictures hereSolve the problem of writing garbled text in the picture, add supported fonts

Installing Smarty is to include the Smarty class library in your own PHP project. The installation steps are as follows: (1) need to smarty official website http://www.smarty.net/download.php Download the latest stable version, all versions of the

Describes the labels and styles of the input fields of the custom Yii2 form. In Yii2, the support components for forms and fields are ActiveForm and ActiveField, To generate a logon box in the format of label, input, and error, you can write the

Yii2-GridView in the development of common functions and techniques, yii2-gridview skills A data grid or a GridView widget is one of the most powerful components in Yii. It has a property named dataProvider, which provides an example of a data

Example of PHP file operations and File Download Functions, This example describes the file operations and File Download functions implemented by PHP. We will share this with you for your reference. The details are as follows: File Operation class:

PHP determines the browser type and language, because when the browser connects to the server, it will first send some content containing its own information (browser type and language ).Here we mainly analyze _ SERVER ["HTTP_USER_AGENT"] (browser

PHP $ _ GET and $ _ POST variables are used to obtain information in the form, such as user input information.PHP4.1 (like) cancels the direct receipt of variables, and uses $ _ GET ['variable name'] to receive the variables passed from the link,

Environment variable: $ _ ENVNote: PHP 4.1.0 and later versions are used. In earlier versions, $ HTTP_ENV_VARS is used.When the parser is running, these variables change from environment variables to PHP global variable namespace ). Many of them are

Use the HTACCESS file to add it. This is the code.Options + FollowSymLinksRewriteEngine onRewriteCond % {HTTP_HOST} ^ domain.com [NC]RewriteRule ^ (. *) $ http://www.111cn.net/#1 [L, R = 301]Php Tutorial writingHeader ("HTTP/1.1 301 Moved

Three element operators in the php TutorialThe functions of the ternary operator are the same as those of the "if... else" flow statement. It is written in one line, and the code is refined and the execution efficiency is high. The proper use of

Php Tutorial assignment operatorThe basic assignment operator is "= ". At first, we may think it is "equal", but it is not. It actually means assigning the value of the right expression to the number of operations on the left.The value of the value

Class Google_API_translator {Public $ out = "";Function translate (){$ This-> out = "";$ Text = urlencode ("computer"); // The word to be translated.$ Google_translator_url = "http://translate.google.com/translate_a/t? Client = t & text = ". $ text."