Add support for Interbase 1 dialect

Author: sim1984

NEWS

@@ -25,6 +25,10 @@ PHP                                                                        NEWS
 -Opcache:
   . Fixed bug #78512 (Cannot make preload work). (Dmitry)
 
+- PDO_Firebird:
+  . Implemented FR #65690 (PDO_Firebird should also support dialect 1).
+    (Simonov Denis)
+
 - Reflection:
   . Fixed bug #78697 (ReflectionClass::implementsInterface - inaccurate error 
     message with traits). (villfa)

UPGRADING

@@ -591,6 +591,9 @@ PHP 7.4 UPGRADE NOTES
     exists "?" operator. For more details see the RFC:
     https://wiki.php.net/rfc/pdo_escape_placeholders
 
+- PDO_Firebird:
+  . The extension now also support dialect 1 in addition to dialect 3.
+
 - Reflection:
   . Numeric value of class, property, function and constant modifiers was
     changed. Don't filter methods and properties through

ext/pdo_firebird/firebird_driver.c

@@ -417,7 +417,7 @@ static int firebird_alloc_prepare_stmt(pdo_dbh_t *dbh, const char *sql, size_t s
 	}
 
 	/* prepare the statement */
-	if (isc_dsql_prepare(H->isc_status, &H->tr, s, 0, new_sql, PDO_FB_DIALECT, out_sqlda)) {
+	if (isc_dsql_prepare(H->isc_status, &H->tr, s, 0, new_sql, H->sql_dialect, out_sqlda)) {
 		RECORD_ERROR(dbh);
 		efree(new_sql);
 		return 0;
@@ -624,6 +624,7 @@ static int pdo_firebird_handle_factory(pdo_dbh_t *dbh, zval *driver_options) /*
 		{ "dbname", NULL, 0 },
 		{ "charset",  NULL,	0 },
 		{ "role", NULL,	0 },
+		{ "dialect", "3", 0 },
 		{ "user", NULL, 0 },
 		{ "password", NULL, 0 }
 	};
@@ -632,14 +633,14 @@ static int pdo_firebird_handle_factory(pdo_dbh_t *dbh, zval *driver_options) /*
 
 	pdo_firebird_db_handle *H = dbh->driver_data = pecalloc(1,sizeof(*H),dbh->is_persistent);
 
-	php_pdo_parse_data_source(dbh->data_source, dbh->data_source_len, vars, 5);
+	php_pdo_parse_data_source(dbh->data_source, dbh->data_source_len, vars, 6);
 
-	if (!dbh->username && vars[3].optval) {
-		dbh->username = pestrdup(vars[3].optval, dbh->is_persistent);
+	if (!dbh->username && vars[4].optval) {
+		dbh->username = pestrdup(vars[4].optval, dbh->is_persistent);
 	}
 
-	if (!dbh->password && vars[4].optval) {
-		dbh->password = pestrdup(vars[4].optval, dbh->is_persistent);
+	if (!dbh->password && vars[5].optval) {
+		dbh->password = pestrdup(vars[5].optval, dbh->is_persistent);
 	}
 
 	do {
@@ -660,6 +661,11 @@ static int pdo_firebird_handle_factory(pdo_dbh_t *dbh, zval *driver_options) /*
 			}
 		}
 
+		H->sql_dialect = PDO_FB_DIALECT;
+		if (vars[3].optval) {
+			H->sql_dialect = atoi(vars[3].optval);
+		}
+
 		/* fire it up baby! */
 		if (isc_attach_database(H->isc_status, 0, vars[0].optval, &H->db,(short)(dpb-dpb_buffer), dpb_buffer)) {
 			break;

ext/pdo_firebird/firebird_statement.c

@@ -374,7 +374,9 @@ static int firebird_stmt_get_col(pdo_stmt_t *stmt, int colno, char **ptr,  /* {{
 
 			*ptr = FETCH_BUF(S->fetch_buf[colno], char, CHAR_BUF_LEN, NULL);
 
-			if (n >= 0) {
+			if ((var->sqltype & ~1) == SQL_DOUBLE) {
+				*len = slprintf(*ptr, CHAR_BUF_LEN, "%.*F", -var->sqlscale, *(double*)var->sqldata);
+			} else if (n >= 0) {
 				*len = slprintf(*ptr, CHAR_BUF_LEN, "%" LL_MASK "d.%0*" LL_MASK "d",
 					n / f, -var->sqlscale, n % f);
 			} else if (n <= -f) {

ext/pdo_firebird/php_pdo_firebird_int.h

@@ -86,10 +86,12 @@ typedef struct {
 	char *time_format;
 	char *timestamp_format;
 
+	unsigned sql_dialect:2;
+
 	/* prepend table names on column names in fetch */
 	unsigned fetch_table_names:1;
 
-	unsigned _reserved:31;
+	unsigned _reserved:29;
 
 } pdo_firebird_db_handle;
 

ext/pdo_firebird/tests/dialect_1.phpt

@@ -0,0 +1,58 @@
+--TEST--
+PDO_Firebird: support 1 sql dialect
+--SKIPIF--
+<?php require('skipif.inc');
+if (strpos(getenv('PDO_FIREBIRD_TEST_DSN'), 'dialect=1')===false) {
+    die('skip: PDO_FIREBIRD_TEST_DSN must contain a string "dialect=1"');
+}
+?>
+--FILE--
+<?php
+	require("testdb.inc");
+
+	$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_WARNING);
+	$dbh->setAttribute(PDO::FB_ATTR_TIMESTAMP_FORMAT, '%Y-%m-%d %H:%M:%S');
+
+	$sql =
+	'SELECT
+	  1 as N,
+	  2.0 as F,
+	  cast(0.76 as numeric(15, 2)) as K,
+	  cast(\'2019-06-12\' as date) as DT
+	FROM RDB$DATABASE';
+	$query = $dbh->prepare($sql);
+	$query->execute();
+	$row = $query->fetch(\PDO::FETCH_OBJ);
+	var_dump($row->N);
+	var_dump($row->F);
+	var_dump($row->K);
+	var_dump($row->DT);
+
+	unset($query);
+
+	$dbh->exec('RECREATE TABLE test_d1(K numeric(15, 2), DT date)');
+	$sql='INSERT INTO test_d1(K, DT) values(?, ?)';
+	$query = $dbh->prepare($sql);
+	$query->execute([0.76, '2019-06-12']);
+	unset($query);
+
+	$sql='SELECT * FROM test_d1';
+	$query = $dbh->prepare($sql);
+	$query->execute();
+	$row = $query->fetch(\PDO::FETCH_OBJ);
+	var_dump($row->K);
+	var_dump($row->DT);
+
+	unset($query);
+	unset($dbh);
+	echo "done\n";
+
+?>
+--EXPECT--
+int(1)
+string(8) "2.000000"
+string(4) "0.76"
+string(19) "2019-06-12 00:00:00"
+string(4) "0.76"
+string(19) "2019-06-12 00:00:00"
+done