regular expression w3c

PHPpreg_replace () regular replacement string. Data processed by a program is not always designed in advance by the database, or cannot be stored using the database structure. For example, Template engine parsing templates and junk sensitive

The data that needs to be processed by a program is not always designed in advance by database thinking, or cannot be stored using the database structure.For example, the template engine parses templates and filters sensitive junk information.In

PHP preg_replace () Regular replacement, unlike JavaScript regular substitution, PHP preg_replace () is the default is to replace all symbol matching conditions of the elements need our program processing data is not always pre-designed database

The data that needs to be processed by our program is not always designed in advance by database thinking, or it cannot be stored with the structure of the database. For example, template engine parsing template, garbage sensitive information

1 DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en">2 HTML>3 Head>4 title>Checknum.htmltitle>5 Metahttp-equiv= "Content-type"content= "text/html; charset=utf-8">6 7 Scripttype= "Text/javascript">8

Phone number Regular expression instance of mobile phone number Phone number Regular expression instance of mobile phone number Input 13875998850Output effective Contact information Input 0136986+9557There is a problem with the output

The most common verification is email address verification. Websites are common. Various web scripts also use regular expressions "(Regular Expression) Verify the email address we entered to determine whether the email address is valid. Some can

The most common verification is email address verification. Websites are common. Various web scripts also use regular expressions "(Regular Expression) Verify the email address we entered to determine whether the email address is valid. Some can

1 DOCTYPE HTML Public "-//W3C//DTD XHTML 1.0 transitional//en" "http://www.w3.org/TR/xhtml1/DTD/ Xhtml1-transitional.dtd ">2 HTMLxmlns= "http://www.w3.org/1999/xhtml">3 Head>4 Metahttp-equiv= "Content-type"content= "text/html; charset=utf-8" />5

Once you have entered, press ENTER to verify! (self-thought is the simplest!) ）Positive integers:Negative integers:IntegerPositive decimals:Negative decimals:DecimalRealKeep 1 decimal places:Keep 2 decimal places:Keep 3 decimal places:Description: