我可以在php脚本中合并2个（或者更多）php函数吗？

im a begginer. is it possible to put two functions in one php script?, per example:

having a php script loading a xml file (simplexml_load_file) and then after I've got the data i want to from that xml also put the DomDocument functions(and variables and all that) to create another xml and write the data parsed(to just the data i want,or maybe convert the data to json format. Question1:is it possible? Question2: or do i need to run those functions in separate scripts with exec();function ?

any explicit explanation is appreciated or link to learn about it. -Thanks.

You can call any number of functions in your one script file.

A php file holds php code. Your php code can contain classes, functions, function calls and so on. You have to focus on the following though:

• Typing: have correct syntax
• Correctness: avoid bugs in your code, test everything
• Separation: a php file should hold closely related code. This is not mandated by the language, but it is common-sense. You will not want to have a file containing conversion functions and date functions, because it is frustrating to read it, so it is beneficial to separate conversion functions from date functions

There is no limitation for function numbers or function call numbers per file for php.

I would suggest that you should watch some nice tutorial movies about php. A good and comfortable way to learn the language. Example.