php redefine constant

Define constant. According to the manual, only constants defined by define are allowed: scalar and null. The scalar type is integer, float, string, or boolean. You can also define the constant value type as resource. see the manual. the constants

PHP, a nested abbreviated name, is an abbreviation for the English Super Text preprocessing language (Php:hypertext preprocessor). PHP is an HTML embedded language, PHP and Microsoft's ASP quite a bit similar, is a server-side implementation of

Problem What is PHP file? which software can be used to open Workaround PHP, a nested abbreviated name, is an abbreviation for the English Super Text preprocessing language (Php:hypertext preprocessor). PHP is an HTML embedded language, PHP and

The problem with absolute paths in require: constant redefinition, variable overrides, and re-invocation increase overhead. Because the relative path refers to the total problem, Google uses the absolute path under reference. Three methods have been

This article we mainly share with you the PHP bottom operating mechanism of the detailed, first we will share with you PHP design concept and features, PHP four layer system, etc., hope to help everyone. 1. PHP Design concept and Features

How to use functional programming in PHP. PHP is not a functional programming language like Lisp. More, PHP is suitable for writing code in the C style. PHP does not have the "function" type. that is to say, the function cannot directly use the

Php object-oriented content 1. What is object-oriented? Object-Oriented Programming (Object Oriented Programming, OOP, Object-Oriented Programming) is a computer Programming architecture, one basic principle of OOP is that a computer program is

Summary of knowledge accumulation during PHP beginners. PHP Basics 1. PHPPHP is an embedded language mixed with HTML. 1. what are the default PHP mark? Php? Short Mark ??, You need to enable the short_open_tag option in php. ini and its PHP

PHP BasicsFirst, the initial knowledge of PHPPHP is an embedded language that is used in combination with HTML.1, PHP tagsThe default tag short mark.??, you need to turn on the Short_open_tag option to open short and other tags in php.ini is not

In this article, I have accumulated some knowledge and experience when I was a beginner in PHP. For more information, see In this article, I have accumulated some knowledge and experience when I was a beginner in PHP. For more information, see