JQUERY& PHP的帖子错误500（服务器内部错误） [英] JQUERY & php post error 500 (server internal error)

问题描述

每当我在web上运行这段代码时，我都会遇到一个错误，铬debbuger返回我这个错误：

pre $ POST http：//my_ip/server_wrapper.php 500（内部服务器错误）


1. PHP服务器正常工作，phpinfo（）正确返回整个信息


2. Web服务器是Apache。


3. Iptables完全打开，我只是在LAN下使用它。

以下是JQUERY，js文件片段

  this.post = function（）{
 $ .post（server_wrapper.php，
 {
 _id：this.id，
 _question：this.question，
 _type：none
}，
函数（数据，状态）{
 alert（ DATA：+ data +status：+ status）; 
} 
）; 
 } 
  

以下是php文件：

 <？php 
 
 if（isset（$ _ POST [_ question]）&& isset（$ _ POST [_ type]）&& isset（$ _ POST [_ id]））{
 
 $ question = $ _POST [_ question]; 
 $ type = $ _POST [_ type]; 
 $ id = $ _POST [_ id]; 
 
 $ con = mysqli_connect（localhost，user，pass，database）; 
 
 if（mysqli_connect_errno（$ con））{
 echo无法连接到数据库; 
 $ b $ else else {
 mysqli_query（$ con，INSERT INTO questions（id，question，type）VALUES（'$ id'，'$ question'，'$ type'）） ; 
} 
 
 mysqli_close（$ con）; 
} 
？> 
  

编辑

这就是日志返回一遍又一遍：

  PHP致命错误：调用/var/www/server_wrapper.php中的未定义函数mysqli_connect 
  

解决方案

 <？php 
 ini_set（'display_errors'，'1'）; 
 ini_set（'error_reporting'，E_ALL）; 
？> 
  

首先在页面上启用错误显示，而不是生成500错误。

其次将确保报告所有错误。这包括通知。

建议：编写甚至不会触发一个通知的代码。

要查找PHP错误日志文件：

  grep error_log /etc/php.ini 
 grep ^ error_log /etc/php.ini 
  

在RedHat上安装MySQL家庭服务器：

  yum install mysql.x86_64 
 yum install mysql mysql-server 
 chkconfig --level 2345 mysqld on 
服务mysqld start 
 mysqladmin -u root密码somepassword 
  

 <$ c我建议您使用以下回购协议$ c> wget http://mirrors.coreix.net/fedora-epel/6/x86_64/epel-release-6-7.noarch.rpm 
 wget http://rpms.famillecollet.com/enterprise/ remi-release-6.rpm 
  

安装：

  rpm -Uvh remi-release  -  *。rpm epel-release  -  * .rpm 
 / bin / rm epel-release  -  *。noarch.rpm remi-release  -  * .rpm 
 perl -pi -e's / enabled = 0 / enabled = 1 / g'/etc/yum.repos.d /remi.repo 
 yum update（可选 - 不推荐，除非你知道你在做什么）
 yum install yum-plugin-priorities 
  

确保安装回购站后，您可以编辑它们并将其设置为0，这样您就可以选择性地使用它们了。

  yum --enablerepo = remi，epel安装任何
  

I am stuck with an error in a webapp that I am developing, I am sure that it is quite basic error.

Whenever I run this code in the web the chromium debbuger return me this error:

 POST http://my_ip/server_wrapper.php 500 (Internal Server Error) 

1. PHP server works properly, phpinfo() returns the whole information correctly
2. The web server is Apache.
3. Iptables is completly open, and I am just using it under LAN.
4. The permission of all the file in the web root directory are 755.

Here is the JQUERY, js file fragment"

this.post    = function () {
 $.post ("server_wrapper.php",
  {
   _id:          this.id,
   _question:    this.question,
   _type:        "none"
  },
  function (data, status) {
   alert ("DATA: " + data + " status: " + status);
  }
 );
}

Here is the php file:

<?php

if (isset($_POST["_question"]) && isset($_POST["_type"]) && isset($_POST["_id"])) {

$question = $_POST["_question"];
$type     = $_POST["_type"];
$id       = $_POST["_id"];

$con      = mysqli_connect ("localhost", "user", "pass", "database");

if (mysqli_connect_errno($con)) {
    echo "Failed to connecto to db";

} else {
    mysqli_query ($con, "INSERT INTO questions (id, question, type) VALUES ('$id','$question','$type')");
}

mysqli_close ($con);
 }
?>

EDIT

This is what the log return over and over again:

PHP Fatal error:  Call to undefined function mysqli_connect() in /var/www/server_wrapper.php

解决方案

To show errors on page:

<?php
    ini_set('display_errors', '1');
    ini_set('error_reporting', E_ALL);
?>

First will enable error display on the page itself instead of generating 500 error.

Second will make sure all errors are reported. This includes Notices.

Advice: Write code that does not even fire one notice.

To find the PHP error log file:

grep error_log /etc/php.ini
grep ^error_log /etc/php.ini

To install MySQL on RedHat family servers:

yum install mysql.x86_64
yum install mysql mysql-server
chkconfig --level 2345 mysqld on
service mysqld start
mysqladmin -u root password somepassword

I recommend you use the following repos if you want to have access to the latest PHP version.

wget http://mirrors.coreix.net/fedora-epel/6/x86_64/epel-release-6-7.noarch.rpm
wget http://rpms.famillecollet.com/enterprise/remi-release-6.rpm

To install:

rpm -Uvh remi-release-*.rpm epel-release-*.rpm
/bin/rm epel-release-*.noarch.rpm remi-release-*.rpm
perl -pi -e 's/enabled=0/enabled=1/g' /etc/yum.repos.d/remi.repo
yum update (optional - not recommended unless you know what you are doing)
yum install yum-plugin-priorities

Make sure after you install the repos you edit them and set enabled to 0 that way you can use them selectively only as you should.

yum --enablerepo=remi,epel install whatever

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