PHP to deprecate MySQL extension
Yes, yes, yes a million times yes.  Every person starting PHP should be taught PDO with parameterized queries from the get go.  The internet (and many respectable CS courses) are littered with examples using mysql_query() and string concatenation, half of which train people to create SQLI bugs or don't explain why escaping is needed; it's too late to undo the damage already done but at least people new to PHP will hopefully be told now that there is a better way.If we had trained people to simply do    $sth = $dbh->("INSERT INTO folks (name, addr, city) values (?, ?, ?);");
    $sth->execute(array($name, $addr, $city));

in 2005, when PDO first came out, uncountable SQLI bugs would have been avoided, and maybe lulzsec wouldn't be having such a field day in 2011...