Cml\Db\MySql\Pdo::count PHP Method

Pdo Class Documentation Show file Open project: linhecheng/cmlphp

count() public method

获取 COUNT(字段名或*) 的结果

public count ( string $field = '*', boolean \| string $isMulti = false, boolean \| string $useMaster = false ) : mixed
$field	string	要统计的字段名
$isMulti	boolean \| string	结果集是否为多条默认只有一条。传字符串时相当于执行了 groupBy($isMulti)
$useMaster	boolean \| string	是否使用主库默认读取从库
return	mixed

    public function count($field = '*', $isMulti = false, $useMaster = false)
    {
        return $this->aggregation($field, $isMulti, $useMaster, 'COUNT');
    }

Pdo

__construct

__destruct

affectedRows

aggregation

avg

buildDebugSql

buildSql

callProcedure

commit

connect

count