Reset type after bind param (#1452)

* Reset type after bind param

Keep the same behavior as 5.9
Issue #1448

* Add unit test, skip for decimal format

* Add unit test, skip for decimal format

* Update unit test

source/shared/core_stmt.cpp

@@ -2508,6 +2508,9 @@ void sqlsrv_param::bind_param(_Inout_ sqlsrv_stmt* stmt)
     }
 
     core::SQLBindParameter(stmt, param_pos + 1, direction, c_data_type, sql_data_type, column_size, decimal_digits, buffer, buffer_length, &strlen_or_indptr);
+    if (!stmt->conn->ce_option.enabled && !stmt->format_decimals) {
+        sql_data_type = SQL_UNKNOWN_TYPE;
+    }
 }
 
 void sqlsrv_param::init_data_from_zval(_Inout_ sqlsrv_stmt* stmt)

test/functional/sqlsrv/sqlsrv_github_1448.phpt

@@ -0,0 +1,34 @@
+--TEST--
+Test for Github Issue 1448
+--DESCRIPTION--
+Prepare and execute with int, then execute with string caused "Invalid character value for cast specification" error.
+Repro script provided by thsmrtone1
+--FILE--
+<?php
+    sqlsrv_configure( 'WarningsReturnAsErrors', 0 );
+    sqlsrv_configure( 'LogSeverity', SQLSRV_LOG_SEVERITY_ALL );
+
+    require_once( 'MsCommon.inc' );
+    $conn = Connect();
+    if( !$conn ) {
+        var_dump( sqlsrv_errors() );
+        die( "sqlsrv_connect failed." );
+    }
+
+    sqlsrv_query($conn, "CREATE TABLE test1448 (testCol nvarchar(50) NULL)");
+
+    $v0 = 1000;
+    $stmt = sqlsrv_prepare($conn, 'INSERT INTO [test1448] (testCol) VALUES (?);', [&$v0]);
+    sqlsrv_execute($stmt);
+
+    $v0 = 'abcd';
+    sqlsrv_execute($stmt);
+
+    $error = sqlsrv_errors(SQLSRV_ERR_ERRORS);
+    var_dump($error);
+
+    dropTable($conn, "test1448");
+    sqlsrv_close($conn);
+?>
+--EXPECT--
+NULL