Update Statement::prepare() signature.

Signed-off-by: Joey Smith <jsmith@webinertia.net>

Signed-off-by: Joey Smith <jsmith@webinertia.net>

Author: tyrsson

src/DatabasePlatformNameTrait.php

@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Laminas\Db\Mysql\Driver;
+namespace Laminas\Db\Adapter\Mysql;
 
 trait DatabasePlatformNameTrait
 {

src/Driver/Mysqli/Mysqli.php

@@ -173,10 +173,10 @@ public function createStatement($sqlOrResource = null)
     {
         /**
          * @todo Resource tracking
-        if (is_resource($sqlOrResource) && !in_array($sqlOrResource, $this->resources, true)) {
-            $this->resources[] = $sqlOrResource;
-        }
-        */
+         * if (is_resource($sqlOrResource) && !in_array($sqlOrResource, $this->resources, true)) {
+         *   $this->resources[] = $sqlOrResource;
+         *}
+         */
 
         $statement = clone $this->statementPrototype;
         if ($sqlOrResource instanceof mysqli_stmt) {

src/Driver/Mysqli/Statement.php

@@ -176,7 +176,7 @@ public function isPrepared()
      * @throws Exception\InvalidQueryException
      * @throws Exception\RuntimeException
      */
-    public function prepare($sql = null)
+    public function prepare(?string $sql = null): self
     {
         if ($this->isPrepared) {
             throw new Exception\RuntimeException('This statement has already been prepared');

src/Driver/Pdo/Statement.php

@@ -146,7 +146,7 @@ public function getParameterContainer()
      * @param string $sql
      * @throws Exception\RuntimeException
      */
-    public function prepare($sql = null)
+    public function prepare(?string $sql = null): ?self
     {
         if ($this->isPrepared) {
             throw new Exception\RuntimeException('This statement has been prepared already');
@@ -164,6 +164,8 @@ public function prepare($sql = null)
         }
 
         $this->isPrepared = true;
+        // todo: why does this not return $this like mysqli?
+        return $this;
     }
 
     /**