- include: Includes and evaluates the specified file, throwing a warning if the file can’t be found.
- include_once: Same as include, but if the file has already been included it will not be included again.
- require: Includes and evaluates the specified file (same as include), but instead of a warning, throws a fatal error if the file can’t be found.
- require_once: Same as require, but if the file has already been included it will not be included again.
E-Learning, Web Design, Linux, PHP, Wordpress, Visual Studio .NET, Windows, SQL Server, ASP.NET, C#
Aug 8, 2012
Difference Between include, include_once, require, and require_once
Every time I worked on PHP, I always used include, then later on I wanted to know the difference between include, include_once, require, and require_once. After googling I came to know the difference.
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