Switch from using PHP_MAJOR_VERSION to separate define for
unicode. Unicode is no more, but these are "bookmarks" where
to change mysqlnd, if Unicode becomes trendy again.

Two functions, which should be methods so one can catch
their output, for example

Two functions, which should be methods so one can catch
their output, for example

Fix sprintf modifiers all around the place. In most cases
%u should be used. Where size_t is used then MYSQLND_SZ_T_SPEC should be
the modifier

Fix sprintf modifiers all around the place. In most cases
%u should be used. Where size_t is used then MYSQLND_SZ_T_SPEC should be
the modifier

void functions return nothing

void functions return nothing

defensive programming, check before using a resource

defensive programming, check before using a resource

Perform later initialization

Perform later initialization

More check for valid MYSQLND_STMT before using it

More check for valid MYSQLND_STMT before using it

Don't reference row_packet before checking if dereferencing is possible

Don't reference row_packet before checking if dereferencing is possible

Check if data is correct and initialize in a safe manner

Check if data is correct and initialize in a safe manner

Handle problems in the row_decoder, return type used to be void,
now it can return on problems.

Handle problems in the row_decoder, return type used to be void,
now it can return on problems.

Fix deallocation which can crash if the object is half-baken.
Happens during OOM.

Fix deallocation which can crash if the object is half-baken.
Happens during OOM.

Handle the situation when MYSQLND_PROTOCOL's methods return NULL.
mysqlnd should not crash but gracefully return with an error.

Handle the situation when MYSQLND_PROTOCOL's methods return NULL.
mysqlnd should not crash but gracefully return with an error.

Gracefully handle OOM in mysqlnd_stmt_init. Release the handle
and return NULL.

Gracefully handle OOM in mysqlnd_stmt_init. Release the handle
and return NULL.