Question

这里有一个mysql noob的位置我需要一个脚本，我将每晚用cron作业运行一次比较2个表并根据“House_number”和“postcode”列查找匹配将识别匹配项，然后生成文本文件。理想情况下，我希望通过sendmail或equivelant通过电子邮件发送给我。

这两个表名为 USER_TABLE business_table

提前致谢

Answer 1

因为你是一个菜鸟，需要一些帮助我把它放在一起给你，请注意这个尚未经过测试，而且在优化和重新使用方面它非常粗糙但是这样的事情，它将取决于你测试:)）

<?php 
    //store this in a seperate file or leave it here
    $databaseDetails = array(
        'host' => 'localhost', 
        'dbName' => 'databaseName',
        'username' => 'user',
        'password' => 'password'
    );

    //instantiate our final array
    $houseArr = array();

    try {

        //connection using PDO (very secure)
        $conn = new PDO('mysql:host='.$databaseDetails['host'].';dbname='.$databaseDetails['dbname'], $databaseDetails['username'], $databaseDetails['password']);
        $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

        //This commented out section is to show you how to prepare a query
        /*
        $prepare = $conn->prepare('SELECT house_number, post_code FROM user_table WHERE created = :date');
        $prepare->execute(array(
            'date' => date('Y-m-d H:i:s', strtotime('Now'))
        ));
        */

        //query for users
        $data = $conn->query('SELECT id, house_number, post_code /*Additional fields here*/ FROM user_table');

        //this will create an array of data that i will explain below
        foreach($data as $row) {
            $houseArr[$row['house_number']]['users'][$row['id']] = $row['post_code'];   
        }

        //query for business
        $data = $conn->query('SELECT id, house_number, post_code /*Additional fields here*/ FROM business_table');

        //this will create an array of data that i will explain below
        foreach($data as $row) {
            $houseArr[$row['house_number']]['business'][$row['id']] = $row['post_code'];    
        }

    } catch(PDOException $e) {
        echo 'ERROR: ' . $e->getMessage();
        exit();
    }

    if(!empty($houseArr)) {

        /*
         *  the houseArr will have house_number as an index, then it will have multiple entries under either users or business
         * for example 
         * user house 43 and postcode 7800 with database id 1900
         * user house 43 and postcode 7801 with database id 1950
         * business house 43 and postcode 7800 with database id 2000
         * business house 43 and postcode 7801 with database id 2050
         * user house 42 and postcode 5400 with database id 2100
         * business house 42 and postcode 7600 with database id 2200
         *   
         * the array will spit out 
         * array(
         *      43 =>                       This is where the house number will be
         *          'user' =>               This is where all the users with house number x will be
         *              '1900' => '7800',   This is a key pair value of the id of the user and the post code they entered
         *              '1910' => '7801'
         *          'business' =>           This is where all the businesses will be with house number x 
         *              '2000' => '7800',   This is a key pair value of the id of the business and the post code they entered
         *              '2050' => '7801'
         *      42 => 
         *          'user' => 
         *              '2100' => 5400,
         *          'business' => 
         *              '2200' => 7600
         * )
         * 
         */

        //this will write the txt file
        file_put_contents('address.txt', print_r($houseArr, true)); 
    }
?>

MYSQL-Script查询2个表并获得门牌号和邮政编码的匹配

1 个答案: