php后台接口，将两个表进行联合查询，使用union语句，在phpmyadmin中执行没有问题，
但是用postman进行测试时，提示内存溢出，有没有不使用ini_set的方法，解决这个问题，我试着unset了
几个变量，还是不行
$recommend = 1;
$check_status = 2;
$art_act_reslut = mysql_query(
"SELECT * FROM (
SELECT
publish_time,
article_id as id,
user_id as user_brand_id,
article_text as text,
article_thumbs as thumds_person_num,
sort_weight,
'' as title,
article_comment_number as article_comment_number FROM article
WHERE recommend = '$recommend' and check_status = '$check_status' and publish_time > '$timestamp'
UNION
SELECT
publish_time,
activity_id as id,
brand_id as user_beand_id,
activity_content as text,
join_persons as thumds_person_num,
sort_weight,
activity_title as title,
'' as article_comment_number FROM activity
WHERE recommend = '$recommend' and check_status = '$check_status' and publish_time > '$timestamp') stain
ORDER BY stain.publish_time DESC, stain.sort_weight DESC");
unset($recommend);
unset($check_status);
//赋值到cards
for($i=0;$i<20;$i++) {
$cards_arr = array();
$art_act_reslut_value = mysql_fetch_assoc($art_act_reslut);
//给相应的参数赋值
$id = $art_act_reslut_value["id"];
$user_brand_id = $art_act_reslut_value["user_brand_id"];
$text = $art_act_reslut_value["text"];
$thumds_person_num = $art_act_reslut_value["thumds_person_num"];
$article_comment_nummber = $art_act_reslut_value["article_comment_number"];
$publish_time = $art_act_reslut_value["publish_time"];
$title = $art_act_reslut_value["title"];
$sort_weight = $art_act_reslut_value["sort_weight"];
unset($art_act_reslut_value);
这是错误信息
Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 20 bytes) in /home/fgang/local/apache/htdocs/bimu/interface/get_home_recommand.php on line 102
