PHP数组或SQL错误迭代foreach循环

Question

我怀疑是数组错误或mysql查询错误。我已经打印了函数中的所有变量，它们返回正确的结果，并在phpmyadmim中尝试了相同的查询，返回正确的结果。

用例非常简单

1. 获取$_GET['gameID']并查询数据库
2. 从第一次查询和查询数据库中获取第二次返回的结果，包括周数和运动。
3. 返回一个包含所有结果的数组，形成第二个查询

问题

当前函数仅返回表的最后一行而不是返回所有行。

表格图片

输出结果



代码

function displayTeamsByGameID($gameID)
{
    global $db;
    //now prevents late submissions
    $sql = "SELECT * FROM bru_schedule WHERE gameID = :gameID";
    $stmnt = $db->prepare($sql);
    $stmnt->bindValue(':gameID', $gameID);
    $stmnt->execute();
    if ($stmnt->rowCount() > 0) {
        $games =  $stmnt->fetch();
        print $weekNum = $games['weekNum'];
        print $sport = $games['sport'];
    $sql = "SELECT * FROM bru_schedule WHERE weekNum = :weekNum AND sport = :sport";
    $stmnt= $db->prepare($sql);
    $stmnt->bindValue(':weekNum', $weekNum);
    $stmnt->bindValue(':sport', $sport);
    $stmnt->execute();
    if($stmnt->rowCount() > 0){
     $matches= $stmnt->fetchAll();
        foreach ($matches as $match) {
             $match[] = array('gameID' => $match['gameID'], 'weekNum' => $match['weekNum'], 'gameTimeEastern' => $match['gameTimeEastern'], 'homeID' => $match['homeID'], 'visitorID' => $match['visitorID'], 'sport' => $match['sport'], 'venue' => $match['venue'], 'tournament' => $match['tournament'], 'spread' => $match['spread']);

                 }//foreach
            }//statment weekNUm Sport
    }//statment gameID
        if (!isset($match)) {
            return false;
        }
        return $match;
}//function

如果有人可以快速扫描我的代码并提供一些建议，我们将不胜感激。

Answer 1

您正在覆盖$match变量，因为您在foreach语句和foreach正文中使用了相同的变量来创建结果数组。使用其他变量。请参阅下面的代码。我为结果使用了一个新变量$result。

function displayTeamsByGameID($gameID)
{
    global $db;
    //now prevents late submissions
    $sql = "SELECT * FROM bru_schedule WHERE gameID = :gameID";
    $stmnt = $db->prepare($sql);
    $stmnt->bindValue(':gameID', $gameID);
    $stmnt->execute();
    if ($stmnt->rowCount() > 0) {
        $result = array();
        $games =  $stmnt->fetch();
        print $weekNum = $games['weekNum'];
        print $sport = $games['sport'];
    $sql = "SELECT * FROM bru_schedule WHERE weekNum = :weekNum AND sport = :sport";
    $stmnt= $db->prepare($sql);
    $stmnt->bindValue(':weekNum', $weekNum);
    $stmnt->bindValue(':sport', $sport);
    $stmnt->execute();
    if($stmnt->rowCount() > 0){
     $matches= $stmnt->fetchAll();
        foreach ($matches as $match) {
             $result[] = array('gameID' => $match['gameID'], 'weekNum' => $match['weekNum'], 'gameTimeEastern' => $match['gameTimeEastern'], 'homeID' => $match['homeID'], 'visitorID' => $match['visitorID'], 'sport' => $match['sport'], 'venue' => $match['venue'], 'tournament' => $match['tournament'], 'spread' => $match['spread']);

                 }//foreach
            }//statment weekNUm Sport
    }//statment gameID
        if (!isset($result)) {
            return false;
        }
        return $result;
}//function

Answer 2

function displayTeamsByGameID($gameID)
{
    global $db;
    //now prevents late submissions
    $sql = "SELECT * FROM bru_schedule WHERE gameID = :gameID";
    $stmnt = $db->prepare($sql);
    $stmnt->bindValue(':gameID', $gameID);
    $stmnt->execute();
    if ($stmnt->rowCount() > 0) {
        $games =  $stmnt->fetch();
        print $weekNum = $games['weekNum'];
        print $sport = $games['sport'];
    $sql = "SELECT * FROM bru_schedule WHERE weekNum = :weekNum AND sport = :sport";
    $stmnt= $db->prepare($sql);
    $stmnt->bindValue(':weekNum', $weekNum);
    $stmnt->bindValue(':sport', $sport);
    $stmnt->execute();
    if($stmnt->rowCount() > 0){
     $matches= $stmnt->fetchAll();
        foreach ($matches as $match) {
             // 【don't reassign value to $match, it's confused! Use an new variable name】
             $ret[] = array('gameID' => $match['gameID'], 'weekNum' => $match['weekNum'], 'gameTimeEastern' => $match['gameTimeEastern'], 'homeID' => $match['homeID'], 'visitorID' => $match['visitorID'], 'sport' => $match['sport'], 'venue' => $match['venue'], 'tournament' => $match['tournament'], 'spread' => $match['spread']);

                 }//foreach
            }//statment weekNUm Sport
    }//statment gameID
        if (!isset($ret)) {
            return false;
        }
        return $ret;
}//function