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PHP takes one kind of server end the script language, compiles likely simply, or is complex dynamic homepage such duty, it can definitely be competent. But matter not always so, sometimes to realize some function, must draw support in operating system's exterior procedure (or called that it order), may achieve twice the result with half the effort like this.

Then, whether can transfer the external command in the PHP script? If energy, how to do? Some what aspect worry? Believed after you read this article, definitely could answer these questions.