Passing a variable from one php include file to another global vs not

Question

I m trying to pass a variable from one include file to another  This is NOT working unless I declare the variable as global in the second include file  However  I do NOT need to declare it as global in the file that is calling the first include  For example     front inc    name    james       index php   include  front inc    echo  name  include  end inc      output  james    end inc   echo  name    output  nothing    IF I declare global  name prior to echoing  name in end inc  then it works properly  The accepted answer to this post explains that this depends on your server configuration  Passing variables in PHP from one file to another  I m using an Apache server  How would I configure it so that declaring  name to be global is not necessary  Are there advantages disadvantages to one vs  the other

User · Answer

This is all you have to do   In front inc  global  name   name    james

User · Answer

Here is a pitfall to avoid  In case you need to access your variable  name within a function  you need to say  global  name   at the beginning of that function  You need to repeat this for each function in the same file   include  front inc    global  name   function foo       echo  name     function bar       echo  name     foo    bar      will only show errors  The correct way to do that would be   include  front inc     function foo       global  name    echo  name     function bar       global  name    echo  name     foo    bar

User · Answer

When including files in PHP  it acts like the code exists within the file they are being included from  Imagine copy and pasting the code from within each of your included files directly into your index php  That is how PHP works with includes   So  in your example  since you ve set a variable called  name in your front inc file  and then included both front inc and end inc in your index php  you will be able to echo the variable  name anywhere after the include of front inc within your index php  Again  PHP processes your index php as if the code from the two files you are including are part of the file   When you place an echo within an included file  to a variable that is not defined within itself  you re not going to get a result because it is treated separately then any other included file   In other words  to do the behavior you re expecting  you will need to define it as a global

[php] Passing a variable from one php include file to another: global vs. not

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