（转载）php 合并数组中的数据,如果键值相等其值相加

/*
* 合并数据，如果键值相等其值相加
* @param array $descs
* @param array $json_wares
*/
public static function getArrayMerge($descs, $json_wares)
{
if (is_array($descs) && is_array($json_wares)) {
$arrayMerge = array();
foreach ($json_wares as $key=>$value) {
if (array_key_exists($key, $descs)) {
$arrayMerge[$key] = $value + $descs[$key];
unset($descs[$key]);
} else {
$arrayMerge[$key] = $value;
}
}
return $arrayMerge+$descs;
} else {
return false;
}
}