When I execute this small piece of PHP code:

```
php -r "echo(in_array(0, array('aaa', 'bbb')));"

```

That echoes **true**...

Of course I have the good return value if I add the strict flag to `in_array`, but I just can't understand why it returns **true** (I can't !!).
If anyone can explain me I will sleep well tonight.

PS: Sorry that this is just about curiosity...