Wordpress Error Establishing A Database Connection Change Domain - Blog

WordPress Error Establishing A Database Connection Change Domain

By admin 0 Comment February 28, 2019

Retrieve or Fetch Data From Database in PHP

As we know Database is a collection of tables that stores data in it.

To retrieve or fetch data from MySQL database it is simple to do it using MySQL ” Select ” query in PHP .

Here in this blog post we will be going to see how to fetch data and to display it in front end.

MySQL Select Query:

PHP:

For this you must have a database in MySQL . Here, we have a database named “company” which consists of a table named “employee” with 5 fields in it.

Next we have created a PHP page named “updatephp.php” where following steps will be going to perform:

  • We first establish connection with server .
  • Selects database.
  • Executes MySQL select query.
  • Display fetched data
  • Closing connection with server.

Below is our complete code with download and live demo option

PHP File: readphp.php

MySQL Code Segment: Here is the MySQL code for creating database and table.

CSS File: style.css

Conclusion:
We have shown you how SELECT command of SQL is executed with PHP, for fetching data from database. For more MySQL commands with PHP, follow our other blog posts .

Your email address will not be published. Required fields are marked *

Dear,
You have told how to create database and table in this example “Retreive Data From Database using PHP”, but forgot to tell how to make the entries into it…

To insert entries into database kindly follow this post :

Its not working…..
Some mistake is there in Retreive Data From Database using PHP

You can send us your query we’ll look into it

Hi Prakash , the below posted code is executed . just you change the database connection details as like your database.
// see this code :
————————————–
selectdata.php file
————————————

Read Data From Database Using PHP – Demo Preview

Read Data Using PHP

Name:
E-mail:
Contact No:
Address:

@import “http://fonts.googleapis.com/css?family=Droid+Serif”;
/* Above line is to import google font style */
.maindiv <
margin:0 auto;
width:980px;
height:500px;
background:#fff;
padding-top:20px;
font-size:14px;
font-family:’Droid Serif’,serif
>
.title <
width:100%;
height:70px;
text-shadow:2px 2px 2px #cfcfcf;
font-size:16px;
text-align:center;
font-family:’Droid Serif’,serif
>
.divA <
width:70%;
float:left;
margin-top:30px
>
.form <
width:400px;
float:left;
background-color:#fff;
font-family:’Droid Serif’,serif;
padding-left:30px
>
.divB <
width:100%;
height:100%;
background-color:#fff;
border:dashed 1px #999
>
.divD <
width:200px;
height:480px;
padding:0 20px;
float:left;
background-color:#f0f8ff;
border-right:dashed 1px #999
>
p <
text-align:center;
font-weight:700;
color:#5678C0;
font-size:18px;
text-shadow:2px 2px 2px #cfcfcf
>
.form h2 <
text-align:center;
text-shadow:2px 2px 2px #cfcfcf
>
a <
text-decoration:none;
font-size:16px;
margin:2px 0 0 30px;
padding:3px;
color:#1F8DD6
>
a:hover <
text-shadow:2px 2px 2px #cfcfcf;
font-size:18px
>
.clear <
clear:both
>
span <
font-weight:700
>

I created a web page that take user detail and question and insert it into my database, but i can’t fetch the answer to back to their page without refreshing and update to keep sending back each answer to the question “id” can you please help me.
This is for school test

How to use select button in php instead of names in your example Retreive Data From Database using PHP
?
Please help me.

thanks buddy for your this Script i was lacking with only one line code which i have got now …

Thanks for your appreciation .!

Keep reading your other blog posts.

Thanks for your appreciation .!

Keep reading our other blog posts.

Thank you Admin
very helpful

That sounds really great ! Keep reading our other blog posts for getting more coding tricks.

Regards,
FormGet Team

Admin please tell me
What is db name , table name and its field name for “colorway.3.2.4” ?

It is a wordpress theme , if you have a wordpress site then you can install it to use , and rest you need not to create any database.

Regards,
FormGet Team.

If I select data from database, I want to get the related output from database. please solve this for me.

Actually the above tutorial is based upon what you are saying , isn’t it ?

WordPress error establishing a database connection change domain

I am converting a visual foxpro application to a java web application and one small, but important piece of the application makes a soap request to a web service.

I have written 3 test clients to call this web service, and I have also tested through SOAP UI. Every one of my tests to this web service returns the error: java.net.SocketException: Connection reset. So I am obviously missing the same thing in every method of test, or doing the same thing wrong.

I have the foxpro code, and I have successfully submitted the request via foxpro and received a valid response. But I don’t have any experience with Foxpro, so I have been struggling with the difference between the code in foxpro that works and the new code I’m writing in java.

I am hoping that someone with more experience with Soap and web services can see my code, maybe try it themselves, and help me understand what the problem is.

I will provide the web service url as well as all my code. I will also provide the foxpro command line code that works.

The foxpro code uses CreateObject("Microsoft.XMLHTTP") . I have learned through my research that this is also used in ASP, VB.net and C#.

1) Here is the web service that I need to call:

Soap Endpoint: https://rlisapi.myfwc.com/wsReceipts.asmx

This web service doesn’t contain ws-security. The credentials are in the request itself. I can’t provide those, of course, but I don’t believe they are needed to help me solve the connection reset problem.

2) First client I created used SAAJ API. Here is my code:

(3) The next version of my client uses Socket and OutputStreamWriter

(4) I have a similar test client that uses HttpUrlConnection

Finally, in addition to all these test clients, I also tried submitting various requests using SOAP UI. Interestingly, I couldn’t load the wsdl from the url so I saved the wsdl source code to a local file and used it.

Here is the request generated by Soap UI from the wsdl file:

WSDL saved locally:

I will also provide you with the Foxpro code that works:

Here is the full stacktrace of the error:

From all my research over the last couple of days, what I’ve determined is that this error is most often caused by the server closing the connection prior the client being done reading it.

At first I thought there was something wrong with the web service itself, but since I’m able to run the foxpro command and get a valid response, that can’t be the case.

I tried changing many of the preferences in Soap UI settings too, including the socket timeout.

Also, my requests do not go through a proxy server.

Any suggestions or advice will be greatly appreciated! Thank you.

UPDATED POST FOLLOWS

Here is the capture from Wireshark, simple ACKs omitted.

Then the series of messages repeats.

So I think what this is showing is that there was first a connection request made from the client ,which was acknowledged by the server. Then there was a Client Hello, a Server Hello, Handshake Protocol Certificate, Server Hello Done, Client Key Exchange, Change Cipher Spec, Encrypted Handshake Message and then finally the Connection Reset (RST) from the server.

I looked up what the Expert Info on the last frame means, and it looks like it could mean protocol sequence suspicious, e.g. sequence wasn’t continuous or a retransmission was detected.

This still has me scratching my head! I don’t understand what I may be doing in my code, or from Soap UI that could cause this connection reset from the server. And why it doesn’t happen from the Microsoft.XMLHTTP post in foxpro code. Could it be that my request is getting sent as fragments and the server won’t accept that?

I think I am going to try to run a wireshark capture while running the foxpro command, but that is on a PC with Windows 8, so I need to first figure out how to run it under admin. The java test client I’m running that gets a connection reset is on my mac.

In the meantime, does anyone have any further insight?

Retrieve or Fetch Data From Database in PHP

As we know Database is a collection of tables that stores data in it.

To retrieve or fetch data from MySQL database it is simple to do it using MySQL ” Select ” query in PHP .

Here in this blog post we will be going to see how to fetch data and to display it in front end.

MySQL Select Query:

PHP:

For this you must have a database in MySQL . Here, we have a database named “company” which consists of a table named “employee” with 5 fields in it.

Next we have created a PHP page named “updatephp.php” where following steps will be going to perform:

  • We first establish connection with server .
  • Selects database.
  • Executes MySQL select query.
  • Display fetched data
  • Closing connection with server.

Below is our complete code with download and live demo option

PHP File: readphp.php

MySQL Code Segment: Here is the MySQL code for creating database and table.

CSS File: style.css

Conclusion:
We have shown you how SELECT command of SQL is executed with PHP, for fetching data from database. For more MySQL commands with PHP, follow our other blog posts .

Your email address will not be published. Required fields are marked *

Dear,
You have told how to create database and table in this example “Retreive Data From Database using PHP”, but forgot to tell how to make the entries into it…

To insert entries into database kindly follow this post :

Its not working…..
Some mistake is there in Retreive Data From Database using PHP

You can send us your query we’ll look into it

Hi Prakash , the below posted code is executed . just you change the database connection details as like your database.
// see this code :
————————————–
selectdata.php file
————————————

Read Data From Database Using PHP – Demo Preview

Read Data Using PHP

Name:
E-mail:
Contact No:
Address:

@import “http://fonts.googleapis.com/css?family=Droid+Serif”;
/* Above line is to import google font style */
.maindiv <
margin:0 auto;
width:980px;
height:500px;
background:#fff;
padding-top:20px;
font-size:14px;
font-family:’Droid Serif’,serif
>
.title <
width:100%;
height:70px;
text-shadow:2px 2px 2px #cfcfcf;
font-size:16px;
text-align:center;
font-family:’Droid Serif’,serif
>
.divA <
width:70%;
float:left;
margin-top:30px
>
.form <
width:400px;
float:left;
background-color:#fff;
font-family:’Droid Serif’,serif;
padding-left:30px
>
.divB <
width:100%;
height:100%;
background-color:#fff;
border:dashed 1px #999
>
.divD <
width:200px;
height:480px;
padding:0 20px;
float:left;
background-color:#f0f8ff;
border-right:dashed 1px #999
>
p <
text-align:center;
font-weight:700;
color:#5678C0;
font-size:18px;
text-shadow:2px 2px 2px #cfcfcf
>
.form h2 <
text-align:center;
text-shadow:2px 2px 2px #cfcfcf
>
a <
text-decoration:none;
font-size:16px;
margin:2px 0 0 30px;
padding:3px;
color:#1F8DD6
>
a:hover <
text-shadow:2px 2px 2px #cfcfcf;
font-size:18px
>
.clear <
clear:both
>
span <
font-weight:700
>

I created a web page that take user detail and question and insert it into my database, but i can’t fetch the answer to back to their page without refreshing and update to keep sending back each answer to the question “id” can you please help me.
This is for school test

How to use select button in php instead of names in your example Retreive Data From Database using PHP
?
Please help me.

thanks buddy for your this Script i was lacking with only one line code which i have got now …

Thanks for your appreciation .!

Keep reading your other blog posts.

Thanks for your appreciation .!

Keep reading our other blog posts.

Thank you Admin
very helpful

That sounds really great ! Keep reading our other blog posts for getting more coding tricks.

Regards,
FormGet Team

Admin please tell me
What is db name , table name and its field name for “colorway.3.2.4” ?

It is a wordpress theme , if you have a wordpress site then you can install it to use , and rest you need not to create any database.

Regards,
FormGet Team.

If I select data from database, I want to get the related output from database. please solve this for me.

Actually the above tutorial is based upon what you are saying , isn’t it ?

Patel Group

Do the Best

How to Move WordPress From Local Server to Live Site

In order for you to migrate your locally developed WordPress site to a live server, you need to have two things. First is the local server. We are assuming that you have a WordPress site running on local server, and you have full access to it. Next, you would need to have web hosting that supports WordPress, so you can migrate your content over.

You would need to have a FTP program and know how to use FTP, so you can upload your content to the live site.

Note: the screenshots used in this article are from WordPress hosting providers that have cPanel.

Step 1: Export Local WordPress Database

First thing you need to do is export your local WordPress database. We will be using phpMyAdmin to do that. If you are unfamiliar with it, then you might want to take a look at our guide to WordPress database management using phpMyAdmin. Simply go to http://localhost/phpmyadmin/ and click on your WordPress database. Next, click on the Export button from the top menu bar.

In the Export Method option choose custom, which will provide you with more options to export your database. Select all tables to export and gzipped for compression. Scroll down to the bottom of the page and press the Go button to download your database.

Step 2: Uploading WordPress Files to Live Site

Now open an FTP client and connect to your live site. Once you are connected to your live site, make sure you upload the files in the right directory. For example if you want the site to be hosted on yoursite.com, then you would want to upload all files in your public_html directory.

Now select your local WordPress files and upload them to your live server.

Step 3: Creating MySQL Database on Live Site

While your FTP client is uploading your WordPress files, you can spend this time on importing your database to the live server. Most WordPress hosting providers offer cPanel to manage your hosting account, so we will show you how to create a database using cPanel. Log in to your cPanel dashboard and click on the MySQL databases icon which can be found in the databases section.

On the next screen, create a database by entering a name for your database.

After creating a database, scroll down to MySQL users section and create or add an existing user to the database. After adding the user, cPanel will take you to set MySQL privileges for that user. Simply grant all privileges to the user.

Step 4: Importing WordPress Database on Live Site

Next step in the process is to import your WordPress database. Go to your cPanel dashboard, scroll down to the databases section and click on phpMyAdmin. This will take you to phpMyAdmin where you want to click on the database you created earlier. phpMyAdmin will show your new database with no tables. Click on the Import tab in the top menu. On the import page, click on choose file button and then select the gzipped database file you saved in step 1. Lastly, press the Go button at the bottom of the page. phpMyadmin will now import your WordPress database.

Step 5: Changing the Site URL

Now you need to change the site URL, so you can setup your live WordPress site. In your phpMyAdmin, look for the wp_options table in your database that we just imported in step 4. If you changed your database prefix, then instead of wp_options it might be _options.

Click on the browse button next to wp_options or the link that you see in the sidebar to open the page with a list of fields within the wp_options table. See screenshot below:

Under the field options_name, you need to look for siteurl. Click the Edit Field icon which can be found at the far left at the beginning of the row.

When you click the edit field, an edit field window will appear. In the input box for option_value, you will see the URL of your local install probably something like: http://localhost/test . Carefully insert your new site url in this field, for example: http://www.wpbeginner.com

Save the field by clicking the Go button.

Next, you need to replicate this step for the option name: home. The wp_options page can be a few pages long, so simply find the home tab. Usually it is on the second page which you can navigate to by clicking on the pagination arrows in phpMyAdmin.

Update the home url to be the same as your siteurl.

Step 6: Setting Up your Live Site

Now that we have imported the database, and all of our content should be uploaded, it is time to configure WordPress. At this time, your site should be showing an Error Establishing Database Connection error. To fix this, connect to your website using an FTP client and edit wp-config.php file. Provide the database name, user and password you created earlier in Step 3. Save the wp-config.php file and upload it back to your server. Visit your website, and it should be live now.

Login to your WordPress admin panel, and go to Settings » General. Click save Options. This will ensure that the site url is corrected anywhere else that needs to be.

Then go to Settings » Permalink and click Save to ensure that all post links are working fine.

Step 7: Fixing Images and Broken Links by updating Paths

Whenever you are moving a WordPress site from one domain to another, or from local server to a live site, you would face broken links and missing images issue. You can either use the SQL query or use the Velvet Blues WordPress plugin.

For those who want to do it via SQL, here is a simple SQL query that should solve this problem:

Simply go to phpMyAdmin, click on your database and then click on SQL from top menu. Write this query but don’t forget to change it with your own local site and live site URLs.

That’s all, hopefully your live site will be up and running by now. Checkout your site to make sure that every thing is working fine as expected. For troubleshooting and questions feel free to leave us a comment below and we will try to help out as much as we can.

If you are doing this on a regular basis, then we highly recommend that you get BackupBuddy because it will make your life easy. You will thank us for that later

Vodien Knowledge Base

  • Created August 16, 2016
  • Author Vodien
  • Category CMS

You may encounter a database error when accessing your WordPress website. Here are the common reasons why you are getting the error establishing a database connection message:

  • wrong database password
  • wrong database name
  • wrong database username

How to fix error establishing a database connection?

via cPanel

Step 1. Log in to your cPanel.

Step 2. For cPanel, click File Manager under Files panel.

Step 3. Locate WordPress directory.

Step 4. Click on wp-config.php.

Step 5. Click on Code Editor.

Step 6. Read the guidelines and click Edit button.

Step 7. In the editor page, locate the database name, username and password.

Check the database credentials and make sure all are correct. Modify all the necessary credentials and update it.

Step 8. Click Save Changes button located at the upper right hand corner of the page.

via FTP

Step 1. Access FTP.

Step 2. Locate WordPress directory.

Step 3. Click on wp-config.php and download.

Step 4. Access the file via editor.

Step 5. Locate the database name, username and password.

/** The name of the database for WordPress */

/** MySQL database username */

/** MySQL database password */

Step 6. Save the wp-config.php file and upload it into your WordPress directory. You may need to overwrite the existing wp-config file.

Do not hesitate to contact our support team if you have further questions.

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