PHP accessing a variable from another function

Question

So, I have two php functions:

function RADD_FILE_GLOBAL(){
   ...
   $file_att = implode(",",$files); 
}

I need to access this $file_att variable from another function:

function FILE_NAME(){
 // need $file_att here
}

How do I access a variable from another function?

@Dezza, for passing this parameter inside function, you need to call second function inside first function. so why don't you declare it as global? — Maha Dev
– Maha Dev, Commented Feb 19, 2016 at 9:32
@MahaDev global var is not a good practice, of course it has its benefits, but not in this case. — Ianis
– Ianis, Commented Feb 19, 2016 at 9:37

Professor Abronsius · Accepted Answer · 2016-02-19 09:43:29Z

3

You could set a return value from the first function which could either be passed as a parameter to the second function or declared, within the second function, as a global.

function RADD_FILE_GLOBAL(){
    /* other code */
   $file_att = implode(",",$files);
   return $file_att; 
}
function FILE_NAME( $file_att ){
    /* do something with variable */
}
/* or */
function FILE_NAME(){
    global $file_att;
    /* do something with var */
}

/* run first function, return a value */
$file_att=call_user_func( 'RADD_FILE_GLOBAL' );

/* later */
call_user_func( 'FILE_NAME',$file_att );

answered Feb 19, 2016 at 9:43

Professor Abronsius

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Comments

mitkosoft · Accepted Answer · 2016-02-19 09:33:17Z

2

$file_att = '';

function RADD_FILE_GLOBAL(){
   global $file_att;
   ...
   $file_att = implode(",",$files); 
}

function FILE_NAME(){
    global $file_att;
 // you have now $file_att here
}

answered Feb 19, 2016 at 9:33

mitkosoft

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Comments

Ianis · Accepted Answer · 2016-02-19 09:37:39Z

-1

You could use global but it's a bit ugly and totally useless. The best way is what @Dezza says, pass it as a parameter :

function RADD_FILE_GLOBAL(){
   $file_att = implode(",",$files); 
   $file_name = FILE_NAME($file_att);
}

function FILE_NAME($file_att){
    // use $file_att
}

edited Feb 19, 2016 at 9:37

answered Feb 19, 2016 at 9:35

Ianis

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3 Comments

Ianis Over a year ago

Then call it from another function ? or from somewhere else ? You have to call the function at one moment...

Maha Dev Over a year ago

But this updated variable will not be available outside of this function if you call from somewhere else.

Ianis Over a year ago

Well the original question was how to use a variable from another function not how to store a result globally.

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