- serialize: documentation ( source)
<?php
$arr = array(
'057.ua'=>array('name' => '', 'name_genitive' => '', 'name_locative' => '', 'name_en' => '','people' => '','people_genitive' => ''),
);
foreach($arr as $k => $v ){
$s = serialize($v);
echo "UPDATE `citysites`.`cis_sites` SET `city_names` = '".$s."' WHERE `url` = 'www.".$k."';".PHP_EOL;
}