在做一个ios端接口，对方传来多个json字符串，我应该如何将json数据与数据库数据做匹配？
在做一个ios端接口，对方传来多个json字符串，我应该如何将json数据与数据库数据做匹配？
我的想法是先根据ios传来的json数组来判断有多少个json字符串，然后进行循环匹配。不知方法是否正确。
如何判断json数组中有多少json字符串？
------解决思路----------------------
如果传入数据的键名都是一样的，则$s = '[{answer:123},{answer:222},{answer:231}]';
$d = json_decode($s, true);
$t = join(',', array_map('current', $d));
$k = key(current($d));
$sql = select * from tbl_name where $k in ($t);

select * from tbl_name where answer in (123,222,231)
------解决思路----------------------
$data = '[{answer:123},{answer:222},{answer:231}]';
$data = json_decode($data, true);
$answers = array();
foreach($data as $val){
array_push($answers, $val['answer']);
}
$sqlstr = select * from table where answer in('.implode(',', $answers).');
#mysql_query($sqlstr) or die(mysql_error());
echo $sqlstr; // select * from table where answer in('123','222','231')