"array_key_exists()" not working properly

Question

Code

$descriptionArr = array( "uk/page"=>"", "uk/page-two"=>"description of page 2");

function getDescription($uri){
    if (array_key_exists($uri, $descriptionArr)) {
      return $descriptionArr[$uri];
    } else {
      return false;
    }
}

Situation

• When i call the function with argument "uk/page-two" it returns the description
• When I call the function with argument "uk/page" it returns false instead of the empty string

Issue

I would like it to return the empty string and only return false when the argument passed does not exist as key in the array.

Answer 1

This should work:

$descriptionArr = array( "uk/page"=>"", "uk/page-two"=>"description of page 2");

function getDescription($uri, $descriptionArr){
    if (false !== array_key_exists($uri, $descriptionArr)) {
      return $descriptionArr[$uri];
    } else {
      return false;
    }
}

Answer 2

You can change your function to the following:

function getDescription($uri) {
    if (isset($descriptionArr[$uri])) {
      return $descriptionArr[$uri];
    } else {
      return false;
    }
}