Associative array when one key doesn't have a value

[csdude55]

I'm working with something like this:

$arr = [
 'lorem' => 'one',
 'ipsum' => 'two',
 'foo'
]

foreach ($arr as $key => $val)
 echo "$key => $val\n";

// Result:
// lorem => one
// ipsum => two
// 0 => foo

"foo" is the one throwing me off, for whatever reason it seems to start over as a numeric index when I expected it to be foo => false.

Assuming that I can't change the $arr variable, can you suggest a way to modify the loop so that "foo" is a key?

[vincevincevince]

You'll need to check and re-write it into a new array, probably line by line.

$arr=fixit($arr);
function fixit($arr)
{
 foreach ($arr as $k=>v) {
 if (is_int($k)) $newarr[$v]=false;
 else $newarr[$k]=$v;
 }
return $newarr;
}

[robzilla]

Alternatively:

$arr = [
 'lorem' => 'one',
 'ipsum' => 'two',
 'foo'
];


foreach ($arr as $key => $val) {
 if(is_int($key)) {
  unset($arr[$key]);
  $key = $val;
  $arr[$key] = $val = false;
 }
 echo "$key => $val\n";
}
print_r($arr);

Returns:

lorem => one
ipsum => two
foo => 

Array
(
 [lorem] => one
 [ipsum] => two
 [foo] => 
)

Or you can leave $arr unchanged, of course, and just do:

foreach ($arr as $key => $val) {
 if(is_int($key)) { $key = $val; $val = false; }
 echo "$key => $val\n";
}

This is all assuming you're sure you won't have any valid key value pairs where the key is an integer.