Question

count

获取数据表中的行数

count($table, $where)

• table [string]

  表名.

• where (optional) [array]

  WHERE 条件.

count($table, $join, $column, $where)

• table [string]

  表名.

• join [array]

  多表查询.

• column [string]

  需要统计的字段.

• where (optional) [array]

  WHERE 条件.

Return: [number] 行的数量.返回的是数字类型.

$count = $database->count("account", [    "gender" => "female"]);echo "We have " . $count . " female users.";