Fix default values

Cf. <https://3v4l.org/PDRvd>.

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@347846 c90b9560-bf6c-de11-be94-00142212c4b1

Author: cmb

reference/sqlite3/sqlite3/construct.xml

@@ -15,7 +15,7 @@
    <modifier>public</modifier> <methodname>SQLite3::__construct</methodname>
    <methodparam><type>string</type><parameter>filename</parameter></methodparam>
    <methodparam choice="opt"><type>int</type><parameter>flags</parameter><initializer>SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE</initializer></methodparam>
-   <methodparam choice="opt"><type>string</type><parameter>encryption_key</parameter><initializer>&null;</initializer></methodparam>
+   <methodparam choice="opt"><type>string</type><parameter>encryption_key</parameter><initializer>""</initializer></methodparam>
   </methodsynopsis>
   <para>
    Instantiates an SQLite3 object and opens a connection to an

reference/sqlite3/sqlite3/open.xml

@@ -13,7 +13,7 @@
    <modifier>public</modifier> <type>void</type><methodname>SQLite3::open</methodname>
    <methodparam><type>string</type><parameter>filename</parameter></methodparam>
    <methodparam choice="opt"><type>int</type><parameter>flags</parameter><initializer>SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE</initializer></methodparam>
-   <methodparam choice="opt"><type>string</type><parameter>encryption_key</parameter><initializer>&null;</initializer></methodparam>
+   <methodparam choice="opt"><type>string</type><parameter>encryption_key</parameter><initializer>""</initializer></methodparam>
   </methodsynopsis>
   <para>
    Opens an SQLite 3 Database. If the build includes encryption, then it will