Warning: array_push() expects parameter 1 to be array

Question

This is my code, and when I run this function I get this :Warning: array_push() expects parameter 1 to be array However I define $printed as an array

Answer 1

You need to use global $printed; or to add $printed as a function parameter.

You may also pass the $printed parameter as reference in your function: http://php.net/manual/en/language.references.pass.php

More about global and variable scopes: http://php.net/manual/en/language.variables.scope.php