PHP large number (floating point) to take the remainder

generally we take the remainder of the operation of the first thought is to use percent%, but when the divisor is a very large value, beyond the int range, so that the surplus is not accurate.  PHP large number (floating point) to take the remainder

Note----HTTPD installation start-up process

1. Yum Install httpd httpd-manual installation Service2, rpm-ql httpd view httpd have installed those files3, enter, etc/httpd/conf/httpd.conf editListen 80 Default PortDirectory "/var/www/html" site default pathService httpd start to activate HTTPD

PHP's Ob_start () function usage

Classic Reference Fragments:The PHP manual says:The output buffers are stackable, which means that when a ob_start () is active, you can call another Ob_start (). Just make sure that the correct number of Ob_end_flush () is correctly called. If

5 ways to hide page elements with CSS

The original link: using CSS to hide the page elements of 5 ways, reproduced please indicate the source!There are many ways to hide page elements in CSS. You can set opacity to 0, set visibility to hidden, set display to none, or set position to

HTML Basics Summary < title >

 HTML: TitleThe title (Heading) is defined by tags such as -. defines the maximum caption. defines the smallest title.this is a headingthis are a headingthis is a headingTip: The browser automatically adds blank lines to the front and back of the

CSS folding Style (2)--Define style sheet

The first style sheet is available (1) embedded style sheet (2) Introduction style sheet, two ways to achieve,I'll put this in the form of code below:(1) Embedded style sheetDemo.html                          This is define style 1      This is the

Basic HTML Concepts

What is HTML?HTML is a language used to describe a Web page. HTML refers to Hypertext Markup Language (Hyper Text Markup Language) HTML is not a programming language, but a markup language (markup language) Markup language is a set

File Upload Class

/***==================================================================* upload.class.php file Upload class, to achieve file upload function* March 27, 2013 0:37:15*==================================================================*/Class

The role of # (pound) in the URL (go)

September 2010, Twitter revamped.A significant change is that URLs are added to the "#!" Symbol. For example, before the revision of the User homepage URL is Http://twitter.com/username After the revision, it became

HTML5 the practice of Semantic tagging (blog page)

Modeled after the use of HTML5+CSS3 made a blog page. The overall effect layout is as follows:The page layout is based on the HTML5 element. So it's important to familiarize yourself with the HTML5 element before you start, and then check that its

JS Get browser information, give a friendship hint, avoid some compatibility issues

Recently in doing WebForm, browser compatibility is a problem, here I collected some information to obtain the browser, can be used for some users, prompted the browser version is too low, let the upgrade version.  This will save us a lot of time

About PX values in css (pixels)

Scene:People: Front-end Intern "a tree" and transduction engineer "Yufeng"Event: Designer design draft, front page implementationYufeng: Tree, design manuscript sent to you, so dot pixels, you ┏ ( ̄へ ̄) =?Ashu: ~ (>_Ashu: Wow, why did you give the

HTTP and HTTPS simultaneous access methods in Nginx environment

After configuring the SSL certificate for Nginx, HTTPS can be accessed normally, HTTP access shows a 400 error, and Nginx configuration is as follows:server {listen 80 default backlog=2048;listen 443;server_name lvtao.net;root /var/www/html;ssl

The first time to write a blog, about the application of front-end development Demvc in JS

to front-end MVC MVC is the abbreviation of model, view, controller, models, views, controllers, respectively. These tend to be more in the background, before MVC is only in the background. Of course, with the progress of technology, the front-end

The difference between attr and prop in jquery

When should I use propafter the introduction of the prop method in the high version of jquery? When do you use attr? What's the difference between the two of them? These problems have arisen.There are a lot of answers on the internet about their two

Web. XML is missing and <failOnMissingWebXml> is SE

SummaryMaven modularityThe following error message was encountered while learning the MAVEN Modular construction project:Web. XML is missing and are set to True。 At this point you need to right-click the project-->java EE tools-->generate

PHP variable definition and use

1 No pre-defined use required2 in PHP the type is declared variable must be used with a dollar sign $ followed by a variable to represent such as $a=100; $b = "string"The unset () function releases the specified variableThe Isset () function detects

Compiling and installing PHP under CentOS

#获取安装包wget http://cn2.php.net/distributions/php-5.6.23.tar.gzTAR-ZXVF php-506.23.tar.gzCD php-5.6.23#依赖程序Yum Install GCCYum Install LIBXML2Yum Install Libxml2-devel-yYum Install OpenSSL Openssl-develYum Install libpngYum Install Libpng-develYum

16/7/11_php-Read File contents

Read File contentsPHP has a rich file operation function, the simplest function to read the file is file_get_contents, you can read the entire file into a string.$content = file_get_contents ('./test.txt ');The file_get_contents can also control the

CSS control, using a picture as a sequence marker

Today read the previous page design work, see to the picture as a project tag display, and I actually use the background image inserted to complete the effect, I felt that the brain loop is quite magical, and now summarize the implementation of the

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