Question

我正在尝试创建一个从mySQL数据库中提取信息的搜索引擎。我的代码如下：

<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>Search Engine Test</title>
</head>
<body>
<script language="php">
// Create a database connection

$connection = mysql_connect("localhost", "root", "", "test");
if (!connection) {
    die("Please reload page. Database connection failed: " . mysql_error());
}

// Select a databse to use
$db_select = mysql_select_db("test", $connection);
if (!$db_select) {
    die("Please reload page. Database selection failed: " . mysql_error());
}

// Search Engine
// Only execute when button is pressed
if (isset($_POST['keyword'])) {
    // Filter
    $keyword = trim($_POST['keyword']);

    // Select statement
    $search = "SELECT Price FROM 'table_1' WHERE * LIKE '%$keyword%'";
    // Display
    $result = mysql_query($search) or die('query did not work');

    while ($result_arr = mysql_fetch_array($result)) {
        echo $result_arr['*'];
        echo " ";
        echo "<br>";
        echo "<br>";
    }

    $anymatches = mysql_num_rows($result);
    if ($anymatches == 0) {
        echo "Nothing was found that matched your query.<br><br>";
    }
}
</script>

<form action="<?php echo $_SERVER['PHP_SELF'];?>" method="post">
    <input type="text" name="keyword">
    <input type="submit" name="search" value="Search">

然而，当我运行它时，我收到一条通知，说我被禁止访问服务器。任何帮助将不胜感激。

Answer 1

$search = "SELECT Price FROM table_1 WHERE fieldname LIKE '%$keyword%'";

您不能在字段名称周围使用单引号，因为它是如何定义字符串的。如果表名是保留字，则可以使用密钥（`）。你也不能做WHERE *，你需要指定一个字段来比较关键字。

我还建议不要在PHP中使用mysql命令，因为它们已被弃用。使用更新的mysqli命令

WAMP服务器不允许使用php搜索引擎？

1 个答案: