我已经编译了以下PHP和HTML,我想要做的是将我的WAMP数据库连接到我的网页,这是一个简单的任务,但我收到的输出显示在下面的图片中,有人可以告诉我哪里出错了?
<?php
//Step 1
$db = mysqli_connect('localhost', 'root', '', 'hospital') or die('Error connecting to MySQL server.');
?>
<html>
<head>
</head>
<body>
<h1>
PHP connect to MySQL
</h1>
<?php
//Step 2
$query = "SELECT * FROM patients";
mysqli_query($db, $query) or die('Error querying database.');
$result = mysqli_query($db, $query);
$row = mysqli_fetch_array($result);
while($row = mysqli_fetch_array($result)){
echo $row['id'] . ' ' . $row['patient_name']. ' ' . $row['check_in_date'] . ' ' . $row['room_number'] . ' ' . $row['bed_number'] . ' ' . $row['notes'] . '<br />';
}
?>
</body>
</html>
答案 0 :(得分:1)
我在该代码中发现了一些错误
$query = "SELECT * FROM patients";
您需要在此处添加分号到查询代码的末尾,所以:
$query = "SELECT * FROM patients;";
然后我们有了这个
$result = mysqli_query($db, $query);
$row = mysqli_fetch_array($result);
while($row = mysqli_fetch_array($result)){
echo $row['id'] . ' ' . $row['patient_name']. ' ' . $row['check_in_date'] . ' ' . $row['room_number'] . ' ' . $row['bed_number'] . ' ' . $row['notes'] . '<br />';
}
这应该有效
$result = mysqli_query($db, $query);
while($row = mysqli_fetch_array($result)){
$id = $row['id'];
$patientname = $row['patient_name']; //do this with every variable you have
echo "$id $patientname";
}
编辑:另外,更改此
$db = mysqli_connect('localhost', 'root', '', 'hospital') or die('Error connecting to MySQL server.');
用这个
$dbhost = "localhost";
$dbuser = "root";
$dbpass = "";
$dbname = "hospital";
$db = mysqli_connect($dbhost,$dbuser,$dbpass) or die ("dbconn");
mysql_select_db($dbname,$db) or die ("msq");
答案 1 :(得分:0)
你不需要分配
$row = mysqli_fetch_array($result);
因为你在while循环中分配它
编辑回答
从行构建一个sperate数组,然后循环遍历,这样你就可以更灵活地在显示结果之前添加或编辑结果
//Step 2
$query = "SELECT * FROM patients";
mysqli_query($db, $query) or die('Error querying database.');
$result = mysqli_query($db, $query);
$rows = array();
while($row = mysqli_fetch_array($result)){
$rows[] = $row;
}
foreach($rows as $r) {
echo $r['id'] . ' ' . $r['patient_name']. ': ' . $r['check_in_date'] . ' ' . $r['room_number'] . ' ' . $r['bed_number'] . ' ' . $r['notes'] . '<br />';
}