Returning a variable from a function in php (return not working)

Question

I\'m building an XML page inside of a function, and for some strange reason I don\'t get the whole thing spit out of the function. I\'ve tried

return $thisX         


        

Answer 1

Are you actually calling the function in the sense of:

$thisXml = getThisXML($someinput);

Maybe a silly question, but I don´t see it in your description.

Answer 2

You need to invoke the function!

$thisXml = 'xml declaration stuff';

echo getThisXML($thisXML);

Or pass the variable by reference:

$thisXml = 'xml declaration stuff';

function getThisXML(&$thisXML){
  ...
  return $thisXml;
}

getThisXML($thisXML);
echo $thisXml;

Answer 3

You can create function in php this way:

<?php

$name = array("ghp", "hamid", "amin", "Linux");
function find()
{
    $find = 0;
    if(in_array('hamid', $name))
    {
      $find = 1;
      return $find;
    }
    else 
    {
      return $find;
    }
}


//###################
$answare = find();
echo $answare;
?>

Answer 4

You are trying to use a variable defined inside the function scope.

Use:

$thisXML;

function do(){
 global $thisXML;
 $thisXML = "foobar";
}

print $thisXML;

Answer 5

return $thisXml;
}
echo $thisXML;

$thisXML; only exists in the scope of the function. Either make $thisXML; global (bad idea) or echo getThisXML() where getThisXML is the function that returns $thisXML;

Answer 6

Returning a variable doesn't mean that it affects that variable globally, it means the function call evaluates to that value where it's used.

$my_var = 5;

function my_func() {
  $my_var = 10;
  return $my_var;
}

print my_func();
print "\n";
print $my_var;

This will print

10
5