Question

I have a key that appears to be an empty string, however using unset($array['']); does not remove the key/value pair. I don’t see another function that does what I want, so I’m guessing it’s more complicated that just calling a function.

The line for the element on a print_r is [] => 1, which indicates to me that the key is the empty string.

Using var_export, the element is listed as '' => 1.

Using var_dump, the element is listed as ['']=>int(1).

So far, I have tried all of the suggested methods of removal, but none have removed the element. I have tried unset($array['']);, unset($array['']);, and unset($array[null]); with no luck.

Answer 1

Try unset($array[null]);

If that doesn’t work, print the array via var_export or var_dump instead of print_r, since this allows you to see the type of the key. Use var_export to see the data in PHP syntax.

var_export($array);

Note that var_export does not work with recursive structures.