fixed compatibility with PHP 8 [Closes #379]

src/Dibi/Drivers/OdbcDriver.php

@@ -124,7 +124,7 @@ class OdbcDriver implements Dibi\Driver
 	 */
 	public function begin(string $savepoint = null): void
 	{
-		if (!odbc_autocommit($this->connection, 0/*false*/)) {
+		if (!odbc_autocommit($this->connection, PHP_VERSION_ID < 80000 ? 0 : false)) {
 			throw new Dibi\DriverException(odbc_errormsg($this->connection) . ' ' . odbc_error($this->connection));
 		}
 	}
@@ -139,7 +139,7 @@ class OdbcDriver implements Dibi\Driver
 		if (!odbc_commit($this->connection)) {
 			throw new Dibi\DriverException(odbc_errormsg($this->connection) . ' ' . odbc_error($this->connection));
 		}
-		odbc_autocommit($this->connection, 1/*true*/);
+		odbc_autocommit($this->connection, PHP_VERSION_ID < 80000 ? 1 : true);
 	}
 
 
@@ -152,7 +152,7 @@ class OdbcDriver implements Dibi\Driver
 		if (!odbc_rollback($this->connection)) {
 			throw new Dibi\DriverException(odbc_errormsg($this->connection) . ' ' . odbc_error($this->connection));
 		}
-		odbc_autocommit($this->connection, 1/*true*/);
+		odbc_autocommit($this->connection, PHP_VERSION_ID < 80000 ? 1 : true);
 	}
 
 

src/Dibi/Translator.php

@@ -290,7 +290,7 @@ XX
 						if (is_array($v)) {
 							$vx[] = $this->formatValue($v, 'ex');
 						} elseif (is_string($k)) {
-							$v = (is_string($v) && strncasecmp($v, 'd', 1)) || $v > 0 ? 'ASC' : 'DESC';
+							$v = (is_string($v) ? strncasecmp($v, 'd', 1) : $v > 0) ? 'ASC' : 'DESC';
 							$vx[] = $this->identifiers->$k . ' ' . $v;
 						} else {
 							$vx[] = $this->identifiers->$v;
@@ -343,11 +343,13 @@ XX
 
 				case 'sN': // string or null
 				case 'sn':
-					return $value == '' ? 'NULL' : $this->driver->escapeText((string) $value); // notice two equal signs
+					return $value === '' || $value === 0 || $value === null
+						? 'NULL'
+						: $this->driver->escapeText((string) $value);
 
 				case 'iN': // signed int or null
-					if ($value == '') {
-						$value = null;
+					if ($value === '' || $value === 0 || $value === null) {
+						return 'NULL';
 					}
 					// break omitted
 				case 'i':  // signed int

tests/dibi/Result.normalize.phpt

@@ -147,7 +147,14 @@ test('', function () {
 	Assert::same(['col' => 1], $result->test(['col' => true]));
 	Assert::same(['col' => 0], $result->test(['col' => false]));
 
-	Assert::same(['col' => 0], @$result->test(['col' => ''])); // triggers warning in PHP 7.1
+	if (PHP_VERSION_ID < 80000) {
+		Assert::same(['col' => 0], @$result->test(['col' => ''])); // triggers warning since PHP 7.1
+	} else {
+		Assert::exception(function () use ($result) {
+			Assert::same(['col' => 0], $result->test(['col' => '']));
+		}, TypeError::class);
+	}
+
 	Assert::same(['col' => 0], $result->test(['col' => '0']));
 	Assert::same(['col' => 1], $result->test(['col' => '1']));
 	Assert::same(['col' => 10], $result->test(['col' => '10']));

tests/dibi/Translator.DateTimeInterface.phpt

@@ -1,9 +1,5 @@
 <?php
 
-/**
- * @phpversion 5.5
- */
-
 declare(strict_types=1);
 
 use Tester\Assert;