Question

$array = array(
    'vegs' => 'tomatos',
    'cheese' => false,
    'nuts' => 765,
    '' => null,
    'fruits' => 'apples'
);

var_dump(in_array(false, $array, true)); //returns true because there is a false value

How to check strictly if there is at least one NON-false (string, true, int) value in array using in_array only or anything but not foreach?

var_dump(in_array(!false, $array, true)); //this checks only for boolean true values

var_dump(!in_array(false, $array, true)); //this returns true when all values are non-false

Answer 1

Actual solution below

Just put the negation at the right position:

var_dump(!in_array(false, $array, true));

Of course this will also be true if the array contains no elements at all, so what you want is:

var_dump(!in_array(false, $array, true) && count($array));

Edit: forget it, that was the answer for “array contains only values that are not exactly false”, not “array contains at least one value that is not exactly false”

Actual solution:

var_dump(
  0 < count(array_filter($array, function($value) { return $value !== false; }))
);

array_filter returns an array with all values that are !== false, if it is not empty, your condition is true.

Or simplified as suggested in the comments:

var_dump(
  (bool) array_filter($array, function($value) { return $value !== false; })
);

Of course, the cast to bool also can be omitted if used in an if clause.