Why use !== FALSE to check stripos in php?

Question

Here is the code I am looking at.

foreach ($header as $idx => $field) {
    if (stripos($field, \'foo\') !== false) {
        $cols[\'foo\'] = $idx;
             


        

Answer 1

Because if the string matched at position 0, 0 evaluates to false, so you make sure to add the extra '=' so that type is taken in to consideration.

strpos() returns false when NO match is found.

Check out comparison operators.