Fixed bindParam function so it implements interface

lib/Doctrine/DBAL/Driver/IBMDB2/DB2Statement.php

@@ -56,7 +56,7 @@ class DB2Statement implements \IteratorAggregate, Statement
     /**
      * {@inheritdoc}
      */
-    public function bindParam($column, &$variable, $type = null)
+    public function bindParam($column, &$variable, $type = null, $length = null)
     {
         $this->_bindParam[$column] =& $variable;
 

lib/Doctrine/DBAL/Driver/Mysqli/MysqliStatement.php

@@ -86,7 +86,7 @@ class MysqliStatement implements \IteratorAggregate, Statement
     /**
      * {@inheritdoc}
      */
-    public function bindParam($column, &$variable, $type = null)
+    public function bindParam($column, &$variable, $type = null, $length = null)
     {
         if (null === $type) {
             $type = 's';

lib/Doctrine/DBAL/Driver/OCI8/OCI8Statement.php

@@ -106,13 +106,13 @@ class OCI8Statement implements \IteratorAggregate, Statement
      */
     public function bindValue($param, $value, $type = null)
     {
-        return $this->bindParam($param, $value, $type);
+        return $this->bindParam($param, $value, $type, null);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function bindParam($column, &$variable, $type = null)
+    public function bindParam($column, &$variable, $type = null,$length = null)
     {
         $column = isset($this->_paramMap[$column]) ? $this->_paramMap[$column] : $column;
 

lib/Doctrine/DBAL/Driver/SQLSrv/SQLSrvStatement.php

@@ -102,13 +102,13 @@ class SQLSrvStatement implements IteratorAggregate, Statement
 
     public function bindValue($param, $value, $type = null)
     {
-        return $this->bindParam($param, $value, $type);
+        return $this->bindParam($param, $value, $type,null);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function bindParam($column, &$variable, $type = null)
+    public function bindParam($column, &$variable, $type = null, $length = null)
     {
         if (!is_numeric($column)) {
             throw new SQLSrvException("sqlsrv does not support named parameters to queries, use question mark (?) placeholders instead.");

lib/Doctrine/DBAL/Portability/Statement.php

@@ -66,7 +66,7 @@ class Statement implements \IteratorAggregate, \Doctrine\DBAL\Driver\Statement
         $this->case = $conn->getFetchCase();
     }
 
-    public function bindParam($column, &$variable, $type = null)
+    public function bindParam($column, &$variable, $type = null,$length = null)
     {
         return $this->stmt->bindParam($column, $variable, $type);
     }