php - 使用 mysqli 计算行数并传递信息

Question

我一直在尝试将 php 页面转换为 mysqli，但遇到了一些问题。鉴于下面的代码以及我命令事物工作的方式，我想知道更好的方法是使用 mysqli 方法。

是否有 mysqli 替代 mysql_num_rows 或者有不同的方法来计算所需的行数？

我如何使用 mysqli 执行以下操作？:

$data = mysql_query($countQuery) or die(mysql_error());
$rowcount = mysql_num_rows($data);

mysql_fetch_assoc 的替代方案是什么？我觉得我不应该使用我正在使用的当前行方法，即使有替换函数，那么正确的方法是什么？

我对这些问题表示歉意，但到目前为止我自己还无法确定答案。

<?php
$con = mysqli_connect("localhost", "user", "", "ebay");
if (!$con) {
    echo "Can't connect to MySQL Server. Errorcode: %s\n". mysqli_connect_error();
    exit;
}
$con->query("SET NAMES 'utf8'");
$cmd = "word";
//normally retrieved from GET
if($cmd=="deleterec") {
    $deleteQuery = "DELETE FROM AUCTIONS1 WHERE ARTICLE_NO = ?";
    if ($delRecord = $con->prepare($deleteQuery)) {
        $delRecord->bind_param("s", $pk);
        $delRecord->execute();
    }
}
$table = 'AUCTIONS';
$brand = "test";
$countQuery = "SELECT ARTICLE_NO FROM ? WHERE upper(ARTICLE_NAME) LIKE '% ? %'";
if ($numRecords = $con->prepare($countQuery)) {
    $numRecords->bind_param("ss", $table, $brand);
    $numRecords->execute();
    $data = $con->query($countQuery) or die(print_r($con->error));
    $rowcount = mysql_num_rows($data);
    $rows = getRowsByArticleSearch($query, $table, $max);
    $last = ceil($rowcount/$page_rows);
}
$self = htmlspecialchars($_SERVER['PHP_SELF'],ENT_QUOTES,'utf-8');
foreach ($rows as $row) // print table rows {
    echo '<tr>' . "\n";
    echo '<td><a href="#" onclick="doThings(\'Layer2\', \'' . $pk . '\')">'.$row['USERNAME'].'</a></td>' . "\n";
    // repeated for each column
}
function getRowsByArticleSearch($searchString, $table, $max) {
    global $con;
    $recordsQuery = "SELECT ARTICLE_NO, USERNAME, ACCESSSTARTS, ARTICLE_NAME, date_format(str_to_date(ACCESSSTARTS, '%d/%m/%Y %k:%i:%s'), '%d %m %Y' ) AS shortDate FROM ? WHERE upper(ARTICLE_NAME) LIKE '%?%' ORDER BY str_to_date(ACCESSSTARTS, '%d/%m/%Y %k:%i:%s')" . $max;
    if ($getRecords = $con->prepare($recordsQuery)) {
        $getRecords->bind_param("ss", $searchString, $table);
        $getRecords->execute();
        $getRecords->bind_result($ARTICLE_NO, $USERNAME, $ACCESSSTARTS, $ARTICLE_NAME, $shortDate);
        while ($getRecords->fetch()) {
            $result = $con->query($recordsQuery);
            $rows = array();
            while($row = mysql_fetch_assoc($result)) {
                $rows[] = $row;
            }
            return $rows;
        }
    }
}

Answer 1

我通常在执行后直接使用它:

 $query->execute();
 // store the result first
 $query->store_result();
 $rows = $query->num_rows;