Php oracle insert vs update?

MERGE
   INTO users_dest dest
  USING( SELECT 1 user_id, 10 points FROM dual) src
     ON( dest.user_id = src.user_id )
 WHEN MATCHED THEN
   UPDATE SET points = src.points
 WHEN NOT MATCHED THEN
   INSERT( user_id, points ) 
     VALUES( src.user_id, src.points );

begin

--Первый запрос
merge into kolesa_brands t
using ( select <id> id, '<name>' name from dual ) n on ( t.id = n.id)
when matched then 
  update set t.name = n.name
when not matched then
  insert (t.id, t.name) values (n.id, n.name);
  
--Второй запрос
merge into kolesa_brands t
using ( select <id> id, '<name>' name from dual ) n on ( t.id = n.id)
when matched then 
  update set t.name = n.name
when not matched then
  insert (t.id, t.name) values (n.id, n.name);
  
 --и т.д. 
  
end;

for ($i = 0; $i < count($router); $i++) {
    $query = "MERGE INTO CORE_INTERFACES USING dual ON "
      // The next row is the match criteria, like If "HOSTNAME" AND "IFINDEX" exist, Then Update else INSERT NEW HOSTNAMES!   
      . "( HOSTNAME = '" . $hostname . "' AND IFINDEX = '" .    t trim($router_interface[0]) . "')" 
      . "WHEN MATCHED THEN UPDATE SET "
      . "IFNAME = '" . trim($router_interface[1]) . "',IFTYPE = '" . trim(clean_iftype($router_interface[2])) . "',IFADMINSTATUS = '" . trim(clean_output($router_interface[3])) . "',"
      . "LAST_UPDATE = CURRENT_TIMESTAMP "
. "WHEN NOT MATCHED THEN INSERT ("
      . "IF_ID,HOSTNAME,IFINDEX,IFNAME,IFTYPE,IFADMINSTATUS,"
      . "FIRST_SEEN "
      . ") VALUES ("
      . " core_interfaces_seq.nextval, "
      . "'" . $hostname . "',"        //$HOSTNAME
      . "'" . trim($router_interface[0]) . "',"       //ifIndex
      . "'" . trim($router_interface[1]) . "',"       //ifName
      . "'" . trim(clean_iftype($router_interface[2])) . "',"         //ifType
      . "'" . trim(clean_output($router_interface[3])) . "',"         //ifAdminState
      . " CURRENT_TIMESTAMP )";
   $stid = oci_parse($gnedb, $sql);
}

<blockquote>require_once "simple_html_dom.php";

error_reporting(E_ALL);
ini_set('display_errors', '1');
$conn = oci_connect('ddd', 'ddd', '127.0.0.1/orcl', 'AL32UTF8');


$brands = array();

$html = str_get_html(file_get_contents('https://kolesa.kz/cars/'));
$i = 'begin ';
$i .= '\r\n';

$select = $html->find('select[id=auto-car-mm-0]', 0);

foreach($select->find('option') as $opt)
{
  if($opt->value == '') continue;

  $i .= 'merge into kolesa_brands t ';
  $i .= 'using (select '.$opt->value.' id, \''.$opt->plaintext.'\' name from dual) n on (t.id = n.id) ';
  $i .= 'when matched then ';
  $i .= 'update set t.name = n.name ';
  $i .= 'when not matched then ';
  $i .= 'insert (t.id, t.name) values (n.id, n.name);';
  $i .= '\r\n';

  $brands[$opt->value] = $opt->plaintext; 
}

$i .= '\r\n';
$i .= 'end;';

$insert = oci_parse($conn, $i);

oci_execute($insert);</blockquote>

Warning: oci_execute(): ORA-06550: line 1, column 6: PLS-00103: Encountered the symbol "\" when expecting one of the following: ( begin case declare exit for goto if loop mod null pragma raise return select update while with << continue close current delete fetch lock inser...

begin\r\nmerge into kolesa_brands tusing (select 4 id, ARO name from dual) n on ( t.id = n.id)when matched thenupdate set t.name = n.namewhen not matched theninsert (t.id, t.name) values (n.id, n.name)\r\nmerge into kolesa_brands tusing (select 1 id, Acura name from dual) n on ( t.id = n.id)when matched thenupdate set t.name = n.namewhen not matched theninsert (t.id, t.name) values (n.id, n.name)\r\nmerge into kolesa_brands tusing (select 2 id, Alfa Romeo name from dual) n on ( t.id = n.id)when matched thenupdate set t.name = n.namewhen not matched theninsert (t.id, t.name) values (n.id, n.name)\r\nmerge into kolesa_brands tusing (select 3 id, Alpina name from dual) n on ( t.id = n.id)when matched thenupdate set t.name = n.namewhen not matched theninsert (t.id, t.name) values (n.id, n.name)\r\nmerge into kolesa_brands tusing (select 6 id, Aston Martin name from dual) n on ( t.id = n.id)when matched thenupdate set t.name = n.namewhen not matched theninsert (t.id, t.name) values (n.id, n.name)\r\nmerge into kolesa_brands tusing (select 7 id, Audi name from dual) n on ( t.id = n.id)when matched thenupdate set t.name = n.namewhen not matched theninsert (t.id, t.name) values (n.id, n.name)\r\nmerge into kolesa_brands tusing (select 150 id, BAW name from dual) n on ( t.id = n.id)when matched thenupdate set t.name = n.namewhen not matched theninsert (t.id, t.name) values (n.id, n.name)\r\nmerge into kolesa_brands tusing (select 11 id, BMW name from dual) n on ( t.id = n.id)when matched thenupdate set t.name = n.namewhen not matched theninsert (t.id, t.name) values (n.id, n.name)\r\nmerge into kolesa_brands tusing (select 15 id, BYD name from dual) n on ( t.id = n.id)when matched thenupdate set t.name = n.namewhen not matched theninsert (t.id, t.name) values (n.id, n.name)\r\nmerge into kolesa_brands tusing (select 9 id, Bentley name from dual) n on ( t.id = n.id)when matched thenupdate set t.name = n.namewhen not matched theninsert (t.id, t.name) values (n.id, n.name)\r\nmerge into kolesa_brands tusing (select 140 id, Brilliance name from dual) n on ( t.id = n.id)when matched thenupdate set t.name = n.namewhen not matched theninsert (t.id, t.name) values (n.id, n.name)\r\nmerge into kolesa_brands tusing (select 14 id, Buick name from dual) n on ( t.id = n.id)when matched thenupdate set t.name = n.namewhen not matched theninsert (t.id, t.name) values (n.id, n.name)\r\nmerge into kolesa_brands tusing (select 16 id, Cadillac name from dual) n on ( t.id = n.id)when matched thenupdate set t.name = n.namewhen not matched theninsert (t.id, t.name) values (n.id, n.name)\r\nmerge into kolesa_brands tusing (select 17 id, Chana name from dual) n on ( t.id = n.id)when matched thenupdate set t.name = n.namewhen not matched theninsert (t.id, t.name) values (n.id, n.name)\r\nmerge into kolesa_brands tusing (select 122 id, Changan name from dual) n on ( t.id = n.id)when matched thenupdate set t.name = n.namewhen not matched theninsert (t.id, t.name) values (n.id, n.name)\r\nmerge into kolesa_brands tusing (select 18 id, Chery name from dual) n on ( t.id = n.id)when matched thenupdate set t.name = n.namewhen not matched theninsert (t.id, t.name) values (n.id, n.name)\r\nmerge into kolesa_brands tusing (select 19 id, Chevrolet name from dual) n on ( t.id = n.id)when matched thenupdate set t.name = n.namewhen not matched theninsert (t.id, t.name) values (n.id, n.name)\r\nmerge into kolesa_brands tusing (select 20 id, Chrysler name from dual) n on ( t.id = n.id)when matched thenupdate set t.name = n.namewhen not matched theninsert (t.id, t.name) values (n.id, n.name)