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php运作结果：Array ( )
- WBOYOriginal
- 2016-06-13 12:22:04995browse
php运行结果：Array ( )
$a=$sql->getAll("select * from wxch_ask_answer");
print_r($a);
运行结果就只有Array ( )，为什么？
我希望把数据库中的数据都显示出来。
------解决思路----------------------
那就有可能表 wxch_ask_answer 里面没有数据
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