what alphanumeric characters examples

If we want to match the Chinese characters in PHP and JS as long as the use of regular/^[\\x{4e00}-\\x{9fa5}]+$/u, matching double-byte characters (including Chinese characters): [^/x00-/xff] can, specifically as follows JS version Regular

a regular expression can: test a pattern of a string. For example, you can test an input string to see if there is a phone number pattern or a credit card number pattern in the string. This is called data validation? Replace text. You can use a

Phpctype function translation and examples. PHPCtype extensions are built-in extensions at the beginning of PHP4.2. Note that all Ctype functions have only one string type parameter and return a Boolean value. Copy the code as follows: $ str0.11 PHP

Regular by Jim Hollenhorst Cold fish Have you ever thought about what a regular expression is and how you can get a basic understanding of it quickly? My goal is to get you started in 30 minutes and have a basic understanding of regular expressions.

  This article mainly introduces the PHP CType function Chinese translation and the example, the correlation function example lists several, needs the friend to be possible to refer to under PHP CType Extensions are extensions that PHP4.2 started,

What is re? You must have used all the characters "*" in the file search, for example, to find all the word files in the Windows directory, you might use the "*.doc" method to do the lookup, because "*" represents any character. The RE is doing

. NET2.0 invisible wings, regular expression of the soul-seekers Author: qingqing Moon children Home page: http://blog.csdn.net/21aspnet/ Time: 2007.4.14 This article implements the following:Only 1 digits can be enteredOnly n digits can be

This article implements the following:Only 1 digits can be enteredOnly n digits can be enteredYou can enter at least n digitsonly m to n digits can be enteredOnly numbers can be enteredOnly one interval number can be enteredYou can only enter

This article implements the following:Only 1 digits can be entered Only n digits can be entered You can enter at least n digits only m to n digits can be entered Only numbers can be entered Only one interval number can be entered You can only enter

. NET2.0 invisible wings, regular expression of the soul-seekers Author: qingqing Moon children Home page: http://blog.csdn.net/21aspnet/ Time: 2007.4.14 This article implements the following:Only 1 digits can be enteredOnly n digits can be