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mysql_query //查询
$str .= ‘"buy":"‘.mysql_num_rows($rs).‘",‘;
$str .= ‘"sell":"‘.mysql_num_rows($rs1).‘",‘;
$str .= ‘"coll":"‘.mysql_num_rows($rs2).‘"‘; //结果
mysql_free_result($rs2);
mysql_free_result($rs1);
mysql_free_result($rs); //释放
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原文地址:http://www.cnblogs.com/maruco2020/p/4521808.html