PHP无法连接到MySQL

Question

I am reading the head first book on PHP and MySQL. 我正在阅读有关PHP和MySQL的第一本书。 Just started chapter 2 where they connect to database. 刚刚从第2章开始，他们连接到数据库。 But my script doesn't do anything. 但是我的脚本什么也没做。 I get no error from the "or die" even when I purposefully enter the incorrect connection string, and the query doesn't insert. 即使故意输入了错误的连接字符串，查询也不会插入，我也不会从“或死”中得到任何错误提示。 I am running Ubuntu server 14 with PHP 5.6.4 and MySQL 5.6.24 on a VM on my Mac. 我在Mac的VM上使用PHP 5.6.4和MySQL 5.6.24运行Ubuntu服务器14。

I can connect remotely with MySQL workbench and execute the query which is successful. 我可以与MySQL工作台远程连接并执行成功的查询。

Here is the my code: 这是我的代码：

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>Aliens Abducted Me - Report an abduction</title>

</head>
<body>
<h2>Aliens Abducted Me - Report an abduction</h2>
<?php

$name = $_POST['firstname'] . ' ' . $_POST['lastname'];
$when_it_happened = $_POST['whenithappened'];
$how_long = $_POST['howlong'];
$how_many = $_POST['howmany'];
$alien_description = $_POST['aliendescription'];
$what_they_did = $_POST['whattheydid'];
$fang_spotted = $_POST['fangspotted'];
$email = $_POST['email'];
$other = $_POST['other'];

echo 'Thanks for submitting the form ' . $name . '<br />';
echo 'You were abducted ' . $when_it_happened;
echo ' and were gone for ' . $how_long . '<br />';
echo 'You saw ' . $how_many . ' of them' . '<br />';
echo 'Describe them: ' . $alien_description . '<br />';
echo 'What the did: ' . $what_they_did . '<br />';
echo 'Was Fang there? ' . $fang_spotted . '<br />';
echo 'Your email address is ' . $email . '<br />';
echo 'Additional information: ' . $other;

$dbc = mysqli_connect('127.0.0.1', 'root', 'password', 'aliendatabase')
or die('Error connecting to server');


$query = "INSERT INTO aliens_abduction (first_name, last_name, " .
    "when_it_happened, how_long, how_many, alien_description, " .
    "what_they_did, fang_spotted, other, email)" .
    "VALUES ('Sally', 'Jones', '3 days ago', '1 day', 'four', " .
    "'green with 6 tenticles', 'We talked and played with a dog', " .
    "'yes', 'I may have seen your dog', 'sally@gregs-list.net')";

$result = mysqli_query($dbc, $query)
or die ('Error querying DB');

mysqli_close($dbc);


?>
</body>
</html>

I have tried changing the host to localhost, ip address, loopback address all with and without the port number. 我尝试将主机更改为localhost，ip地址，回送地址，无论是否包含端口号。 But what the most frustrating thing is that I get no errors. 但是最令人沮丧的是我没有出错。 Even when I should be. 即使在我应该的时候。

I have even read up on different ways to create the connect/error commands using "if" ie 我什至阅读了使用“ if”创建连接/错误命令的不同方法，即

if (!$conn) {
    die("Connection failed: " . mysqli_connect_error());
}

no difference. 没有不同。 What is going wrong? 怎么了？

Answer 1

try this one 试试这个

 $dbc = mysqli_connect("localhost","root","password",'aliendatabase');

if(!$dbc)
{
   echo "cannot connet to the server";
}
$q = "Your insert query here";
$query=mysqli_query($dbc, $q)
 or die("Error: ".mysqli_error($dbc));
 mysqli_close($dbc);

Answer 2

Thanks for getting back to me, i appreciate it. 感谢您回到我这里，我非常感激。 I discovered what the issue is. 我发现了问题所在。 The errors not displaying was thanks to the errors not being setup in my php.ini (display_errors=off, needs to be changed to on). 由于我的php.ini中未设置错误（display_errors = off，需要更改为on），因此无法显示错误。 then i got this error "Fatal error: Call to undefined function mysqli_connect()" and this was because mysqli extension was not installed. 然后我收到此错误“致命错误：未定义函数mysqli_connect（）的调用”，这是因为未安装mysqli扩展名。 Can be checked with php -m | 可以用php -m检查 grep on linux, if returns nothing then mysqli is not installed. Linux上的grep，如果未返回任何内容，则未安装mysqli。 install php5-mysqlnd and restart apache. 安装php5-mysqlnd并重新启动apache。 Then fixed thanks for all the help. 然后修复，感谢您的所有帮助。

PHP无法连接到MySQL

问题描述

2 个解决方案

解决方案1
0 2015-07-26 18:42:36

解决方案2
0 2015-07-26 19:09:24

PHP无法连接到MySQL

问题描述

2 个解决方案

解决方案1 0 2015-07-26 18:42:36

解决方案2 0 2015-07-26 19:09:24

解决方案1
0 2015-07-26 18:42:36

解决方案2
0 2015-07-26 19:09:24