php only digits

PHP regular expression matches a combination of 6 to 16 characters (and can only contain digits, letters, and underscores) This article describes how to use php regular expressions to match a combination of 6-bit and 16-bit characters.

Joe Brockmeier briefly introduces the PHP scripting language, discusses the origin, performance, and application Platform of PHP. A simple example of a PHP script illustrates its basic syntax and usage. If you are working on web-based development,

PHP Tutorial Configuration Chinese Narration Let's see what you see, php.ini. [PHP] ;;;;;;;;;;;; WARNING;;;;;;;;;;;;; This is the default settings file for new PHP installations.; By default, PHP installs itself with a configuration suitable for;

Compiling the source package requires./configure then compile a. so fileOne less error packetInstall packageNormal displayThe LS directory has a./configure fileQuerying module LocationsEditing a configuration fileEditing a configuration fileIncrease

During Website user registration, it is often necessary to verify the number of digits and letters that some fields contain, because they are not familiar with regular expressions, I 'd like to record this kind of things for use when necessary. Php

PHP allows you to share user-defined functions hidden by asterisks (*) with four digits in the middle of a mobile phone number. Php shields four phone numbers in the middle: Copy codeThe Code is as follows:Method 1:Function hidtel ($ phone ){$

About PHP, we have a lot of misunderstanding, but in fact, modern PHP is a door regardless of development efficiency or execution efficiency is quite high programming language. On the various aspects of modern PHP features, you can refer to the

Php intercepts the Chinese string to get the last four digits $ str & nbsp; the string to be truncated; only the "string" is left "!!! & Nbsp; the last four digits of the string & nbsp; $ Str = "string to be intercepted "; Only the "string" is

PHP operating mechanism and principle (underlying), and php operating mechanism. The PHP operating mechanism and principle (underlying). when talking about the php operating mechanism, we should first introduce the php module. php has three modules

Ensure the security of your PHP application and ensure that your PHP application Before you beginIn this tutorial, you will learn how to add security to your own PHP Web application. This tutorial assumes that you have at least one year of