Removed redundant if and use short array syntax (#571)

Author: kamil-tekiela

reference/pdo/prepared-statements.xml

@@ -107,10 +107,9 @@ $stmt->execute();
 <![CDATA[
 <?php
 $stmt = $dbh->prepare("SELECT * FROM REGISTRY where name = ?");
-if ($stmt->execute(array($_GET['name']))) {
-  while ($row = $stmt->fetch()) {
-    print_r($row);
-  }
+$stmt->execute([$_GET['name']]);
+foreach ($stmt as $row) {
+  print_r($row);
 }
 ?>
 ]]>
@@ -175,11 +174,11 @@ print "procedure returned $value\n";
 <![CDATA[
 <?php
 $stmt = $dbh->prepare("SELECT * FROM REGISTRY where name LIKE '%?%'");
-$stmt->execute(array($_GET['name']));
+$stmt->execute([$_GET['name']]);
 
 // placeholder must be used in the place of the whole value
 $stmt = $dbh->prepare("SELECT * FROM REGISTRY where name LIKE ?");
-$stmt->execute(array("%$_GET[name]%"));
+$stmt->execute(["%$_GET[name]%"]);
 ?>
 ]]>
    </programlisting>