怎么把mysql转换成mysqli? [英] How to convert mysql to mysqli?

问题描述

我很累将mysql转换为mysqli，但似乎收到了很多错误和警告，但我在连接数据库时没有问题，但是其余代码似乎错了我在做什么错了?

I tired to convert my mysql to mysqli but seems to be getting a lot of errors and warnings i got no problem connecting to the data base but the rest of the code seems wrong what am i doing wrong?

sql:

<?php
mysql_connect("localhost", "root", "");
mysql_select_db("searchengine");

$sql = mysql_query(sprintf(
    "SELECT * FROM searchengine WHERE pagecontent LIKE '%s' LIMIT 0,%d",
        '%'. mysql_real_escape_string($_GET['term']) .'%',
        $_GET['results']));

while($ser = mysql_fetch_array($sql)) {
    echo "<h2><a href='$ser[pageurl]'>$ser[pageurl]</a></h2>";
}

// don't forget to close connection
mysql_close();


?>

mysqli

<?php
mysqli_connect("localhost","root","","searchengine") or die("Error " . mysqli_error($link));

$result = mysqli_query(sprintf(
    "SELECT * FROM searchengine WHERE pagecontent LIKE '%s' LIMIT 0,%d",
        '%'. mysqli_real_escape_string($_GET['term']) .'%',
        $_GET['results']));

while($ser = mysqli_fetch_array($result)) {
    echo "<h2><a href='$ser[pageurl]'>$ser[pageurl]</a></h2>";
}

mysqli_close();


?>

推荐答案

您可以通过创建mysqli对象来尝试使用它，如下所述:

you can try it by creating a mysqli object like described here: http://www.php.net/manual/en/class.mysqli.php

或者仅仅是这样:

$db = new mysqli($hostname, $username, $password, $database);

然后像这样查询它:

$result = $db->query('SQL HERE');

在您的情况下，mysqli的代码应如下所示

in your case the code for mysqli would look like this

$db = new mysqli("localhost","root","","searchengine");

$result = $db->query(sprintf(
  "SELECT * FROM searchengine WHERE pagecontent LIKE '%s' LIMIT 0,%d",
  '%'. mysqli_real_escape_string($_GET['term']) .'%',
  $_GET['results'])
);

while($ser = mysqli_fetch_array($result)) {
    echo "<h2><a href='$ser[pageurl]'>$ser[pageurl]</a></h2>";
}

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