In PHP, count(false) returns 1!
This is because casting a false value as an array (which happens automatically when using count()) returns an array containing a single element with the value false. Fun.
$ php -a
Interactive mode enabled
<?php
var_dump(count(false));
int(1)
var_dump(count(true));
int(1)
var_dump(count(''));
int(1)
var_dump(count(null));
int(0)
var_dump(count((array)false));
int(1)
var_dump((array)false);
array(1) {
[0]=>
bool(false)
}
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