dqef7931 2017-06-06 04:32
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在SQL查询Codeigniter中插入PHP变量

I'm using Codeigniter to use some queries and this is my code so far. is my code correct?

$this->db->select("(SELECT SUM(grand_total) FROM Sales_order WHERE member = '2') - (SELECT SUM(amount) FROM payment WHERE member_id = '2')  AS total_sales");

and how to change number 2 with this variable
$this->session->userdata('ID')

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2条回答 默认 最新

  • dqs13465424392 2017-06-06 04:33
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    Try this

    $this->db->select("(SELECT SUM(grand_total) FROM Sales_order WHERE member = '".$this->session->userdata('ID')."') - (SELECT SUM(amount) FROM payment WHERE member_id = '".$this->session->userdata('ID')."')  AS total_sales"');
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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