PHP中的PDO实施问题

Question

I want to know why does this code work:

$conn = new PDO("mysql:host=localhost;dbname=university;charset=utf8","root","",
    array(PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES 'utf8'"));

while this one doesn't:

$conn = new PDO("mysql:host = localhost;dbname=university;charset = utf8","root","");

I have problem on that utf8 section. Second code showed me ??? as result but first one worked properly. Both should work properly but...

Answer 1

The difference are the spaces near the two "=".

You need to erase them.