PHP 读取Postgresql中的数组

function getarray_postgresql($arraystr)
{
$regx1 = '/^{(.*)}$/';
$regx2 = "/"((\\|\"|[^"])+)"|[^,]+/";
$regx3 = '/^[^"].*$|^"(.*)"$/';
$match = null;
preg_match( $regx1,$arraystr,$match);
$str = $match[1];
preg_match_all($regx2,$str,$match);
$items = $match[0];
$array = array();
$count = count($items);
for($index = 0; $index < $count;++$index)
{
preg_match($regx3,$items[$index],$match);
$array[$index]=end($match);
}
return $array;
}