PHP define() Function
 Complete PHP Misc Reference
Definition and Usage
The define() function defines a constant.
Constants are much like variables, except for the following differences:
- A constant's value cannot be changed after it is set
- Constant names do not need a leading dollar sign ($)
- Constants can be accessed regardless of scope
- Constant values can only be strings and numbers
Syntax
|
define(name,value,case_insensitive)
|
| Parameter |
Description |
| name |
Required. Specifies the name of the constant |
| value |
Required. Specifies the value of the constant |
| case_insensitive |
Optional. Specifies whether the constant name should be case-insensitive.
If set to TRUE, the constant will be case-insensitive. Default
is FALSE (case-sensitive) |
Example 1
Define a case-sensitive constant:
<?php
define("GREETING","Hello you! How are you today?");
echo constant("GREETING");
?>
|
The output of the code above will be:
|
Hello you! How are you today?
|
Example 2
Define a case-insensitive constant:
<?php
define("GREETING","Hello you! How are you today?",TRUE);
echo constant("greeting");
?>
|
The output of the code above will be:
|
Hello you! How are you today?
|
Complete PHP Misc Reference
Create a free Flash website with our simple, online web design editing platform. Stunning templates
and user-friendly tools make website building easy and fun.
Start Creating your free website now!
Need an easy way to get data into XML, or transform XML to another format?
MapForce lets you map XML data to/from any combination of XML, database, flat file,
Excel 2007, XBRL, or Web services data. Then it transforms data instantly or
auto-generates royalty-free code for recurrent conversions.
New features in Version 2010!
- Easy-to-use, graphical data mapping interface
- Instant data transformation
- XSLT 1.0/2.0 and XQuery code generation
- Java, C#, and C++ code generation
- Advanced data processing functions
- Support for all major relational databases including SQL Server, IBM DB2, Oracle, and more
- Visual Studio & Eclipse integration
- Available in 32-bit and 64-bit versions
Download a fully-functional trial today!
|
|
|
|
