call function defined in a file include after this file

Question

Suppose I have following files

<?php 
     include 'file_A';
     include 'file_B';
 ?>

a function defined foo() in file_B, is there any way to use it in file_A by any means???

actually, I am working in a application where a range of different functions are defined in modules, I want to use these function across the modules without looking where it defined included before or after the file even.

I would say no, but following your question, maybe I hope not. — Jared Farrish
– Jared Farrish, Commented Apr 18, 2011 at 3:38
Spider-code, spider-code, does whatever, some spider-code does. Can it call, a random function, no it can't, because it's interpreted. ... Try having some structure to your modules. When you generate a call graph and it looks like a hideous spiderweb, you're doing something wrong. — Borealid
– Borealid, Commented Apr 18, 2011 at 3:42
@Borealid - Yeah, but we have all been there, out of control of what code was running, yet responsible. — Jared Farrish
– Jared Farrish, Commented Apr 18, 2011 at 3:44

Chuck Callebs · Accepted Answer · 2011-04-18 03:45:59Z

2

As PHP is an interpreted language, you cannot do this.

What I would do as a solution is extract the methods you need to share into a CommonMethods class or something similar. Make them static if possible.

Then include the CommonMethods file before file_A and file_B.

I'd spend a little time researching design patterns for PHP before continuing your project. Spaghetti code is never a good thing.

answered Apr 18, 2011 at 3:45

Chuck Callebs

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3 Comments

Jared Farrish Over a year ago

Spaghetti code? Did you say spaghetti code? I like spaghetti. I like ravioli. Can you program in ravioli? Gnocchi? I like Italian food.

Wh1T3h4Ck5 Over a year ago

+1 for mentioning Spaghetti code... I haven't heard that term for a very long time

Chuck Callebs Over a year ago

It's the first thing I think of when PHP is mentioned. Not necessarily due to the language itself, but the programmers I've dealt with who utilize it. I've seen terrible examples of spaghetti code. And not just regular spaghetti, we're talking angel hair.

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