Merge branch 'pull-request/2528'

* pull-request/2528:
  Change flags to use SQLITE3_OPEN_READ* constants instead of a fake-boolean, add tests on errors
  Implement writing to BLOBs in SQLite3

diff --cc UPGRADING
index a77af84df3e70617833f457fa43c4926dda41b6e,0530958def0260894f85fea47999778408c1f401..5fb5bf003568207576275f0aef1dcc2f41483aea
--- 1/UPGRADING
--- 2/UPGRADING
+++ b/UPGRADING
@@@ -102,15 -104,9 +102,18 @@@ PHP 7.2 UPGRADE NOTE
    . A trailing comma in group use statements is now allowed.
      (https://wiki.php.net/rfc/list-syntax-trailing-commas)
  
 +- DBA:
 +  . Implemented support for the LMDB backend.
 +
  - PCRE:
    . Added `J` modifier for setting PCRE_DUPNAMES.
 +  . Added `PREG_UNMATCHED_AS_NULL` flag to allow distinguish between unmatched
 +    subpatterns and empty matches by reporting NULL and "" (empty string),
 +    respectively.
 +
++- SQLite3:
++  . Implemented writing to BLOBs.
+ 
  - Standard:
    . Simplified password hashing API updated to support Argon2i hashes when PHP is compiled with libargon2
      (https://wiki.php.net/rfc/argon2_password_hash).