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我已经构建了一个 PHP/MySQL CSV 上传器/更新器来更新高中橄榄球队的分数。

当我使用 Windows 7 在 XAMPP 上运行此脚本时，“加载数据输入文件”查询出现权限错误。我在 PHPMyAdmin 中检查了我的权限，并且用户拥有所有权限，所以不是这样。

我需要先解决这个问题。我最终通过直接在 PHPMyAdmin 上运行查询来上传所有内容。但是，当我尝试运行两个上传查询时，我的脚本超时。

我在这里要做的过程是上传文件并将记录导入新表（csv_data）。然后我想运行两个更新查询来用 csv_data 表中的新数据更新游戏表。

这两个查询的原因是，就家庭/访客而言，有时错误的团队位于错误的列中。我发现使用 CONCAT() 确实会减慢速度。

所以我需要先用“LOAD DATA INFILE”查询解决我的权限问题，然后想办法加快我的更新查询。有任何想法吗？

<?php
require_once('global.php');
if (array_key_exists('submit', $_POST)) {
    if ($_FILES['csv']['error'] > 0){
        echo "Error: " . $_FILES['csv']['error'] . "</br>" . "You have not selected a file or there is another error."; 
    } else {
        $tmp = $_FILES['csv']['tmp_name'];
    }
    if (!$_FILES['csv']['type'] == 'text/csv'){
        echo "Please select a CSV File";
    } else {
        $location = dirname(__FILE__) . '/csv/' . basename($_FILES['csv']['name']);
        move_uploaded_file($tmp, $location);
    }
    $errors = array();
    // Need to get this query to work properly regarding permissions
    $query = $db->prepare("LOAD DATA INFILE ? 
        INTO TABLE csv_data 
        FIELDS TERMINATED BY ',' 
        LINES TERMINATED BY '\n' 
        (game_week, home_team, home_score, visitor_team, visitor_score)");
    if ($query->execute(array($location))) {
        try {
            // Need to figure out how to use LIKE instead of = and do it quickly
            $query_two = $db->prepare("UPDATE game g, csv_data c, team home_team, team visit_team 
                SET g.game_home_score = c.home_score, 
                    g.game_visitor_score = c.visitor_score, 
                    g.game_complete = 'Y' 
                WHERE g.game_week = c.game_week 
                    AND home_team.team_name LIKE CONCAT('%', c.home_team, '%') 
                    AND home_team.team_id  LIKE CONCAT('%', g.game_home_team, '%') 
                    AND visit_team.team_name  LIKE CONCAT('%', c.visitor_team, '%') 
                    AND visit_team.team_id  LIKE CONCAT('%', g.game_visitor_team, '%')");
            if (!$query_two->execute()) {
                $errors[] = 'The first update query failed.';
            }
            $query_three = $db->prepare("UPDATE game g, csv_data c, team home_team, team visit_team 
                SET g.game_home_score = c.visitor_score, 
                    g.game_visitor_score = c.home_score, 
                    g.game_complete = 'Y' 
                WHERE g.game_week = c.game_week 
                    AND home_team.team_name  LIKE CONCAT('%', c.visitor_team, '%') 
                    AND home_team.team_id  LIKE CONCAT('%', g.game_home_team, '%') 
                    AND visit_team.team_name  LIKE CONCAT('%', c.home_team, '%') 
                    AND visit_team.team_id  LIKE CONCAT('%', g.game_visitor_team, '%')");
            if (!$query_three->execute()) {
                $errors[] = 'The second update query failed.';
            }
        } catch(PDOException $e) {
            echo $e->getMessage();
        }
    } else {
        $errors[] = 'CSV Upload Query Failed.';
    }
}
?>
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