pgsql: Binary data support improvement

Hi all, Current pgsql module lacks direct binary support. Therefore, users have to use pg_escape_bytea/pg_unescape_bytea for binary handling even with prepared statement type APIs. Use of pg_escape_bytea/pg_unescape_bytea requires some overheads on both server and client side. Following patch enables pg_execute() to handle binary directly. https://github.com/yohgaki/php-src/compare/pgsql_binary_support NOTE: This patch is only for PoC and treats all parameters as binary, returns binary result ALWAYS. i.e. Not only bytea, but int, float, numeric, etc are returned as binary. I'm planning to add $params_format(array) and $binary_result(bool) parameter. pg_execute() will look like Current: resource pg_execute ([ resource $connection ], string $stmtname , array $params ) New: resource pg_execute ([ resource $connection ], string $stmtname , array $params [, array $params_format [, bool $binary_result]] ) Any thoughts? -- Yasuo Ohgaki yohgaki@ohgaki.net