PHP MySQL Simple Delete using PDO in Bootstrap Tutorial

 Furqan Aziz |  28 Dec 2013 |  Tutorials

Introduction

Delete Statement is very common and used to Delete existing records in database table.PHP MySQL Simple Delete using PDO in Bootstrap is a tutorial in which we will learn how to delete data in database table using PDO (PHP Data Objects) prepared statements while using Bootstrap CSS Framework. We will create table fist and then insert some records in it, then we will create a form for delete. Then we will use Post method in form to send values to another page and then we will get values, bind them and use them in prepare statements. Finally we will show the success message if data Deleted successfully. This tutorial contains demo and source in which you can test INSERT, UPDATE and SELECT options at one place. We will learn

• How to create a fruit list table for demo.
• How to make a Connection Page.
• How to prepare query for delete
• How to bind values for query.
• How to execute delete query.
• How to show a success message for Delete.

Source Files and Folders Explanation

Source Code Folder contains many files and folders, below is the explanation of each files and folders.

• sql.txt contains full database structure along with sample data.
• index.php is a startup page which contains try it button.
• AdminIndex.php is a page which has various options like INSERT, UPDATE, DELETE, SELECT buttons along with tables for showing data.
• FruitDMy.php is about prepared query for Delete functionality.
• configPDO.php is a file which will create connection with MySQL database.
• footer.php is a file which contains footer bar and form for Fruit name delete.
• assets folder contains necessary css files, icons, images and js files.

Create Table and Sample Data

1. We will create sample table in our database using sql.txt file which contains following table create queries and sample data for demo and test.
• fruitsratelist table contains fields like Fruitname and its Rate.

• CREATE TABLE IF NOT EXISTS `fruitsratelist` (
    `Fruitname` varchar(15) NOT NULL,
    `Rate` double NOT NULL
  ) ENGINE=MyISAM DEFAULT CHARSET=latin1;

• INSERT INTO `fruitsratelist` (`Fruitname`, `Rate`) VALUES
  ('Apple', 70),
  ('Apple', 90),
  ('Mango', 60),
  ('Banana', 70),
  ('Strawberry', 80),
  ('Apple', 40),
  ('Lemon', 70),
  ('Kiwi', 80);

Create Delete Button

2. We will create a button for DELETE inside option side nav in AdminIndex.php page with id deleteit and set data-toggle as modal for showing reference DIV in a modal. We set button class as danger button.

• <a href="#deleteit" data-toggle="modal" class="btn btn-danger">Delete</a>
  

Create Form in Modal

3. Modal will be open when Delete Button pressed which will display below form for Delete of Fruit Names. Form code is in footer.php page which is included in AdminIndex.php. This form contains fruit names in drop down select option for delete. When we press Delete Fruit Records Button it will send values as POST method to FruitDMy.php.

• <div id="deleteit" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
  <div class="modal-header">
  <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
  <h3 id="myModalLabel">Delete Fruit Name and Rates</h3>
  </div>
  <div class="modal-body">
  <form class="form-horizontal" method="post" action="FruitDMy.php">
  
  <div class="control-group">
  <label class="control-label" for="Fruitname1">Fruit Name</label>
  <div class="controls">
  <select name="Fruitname1" id="Fruitname1"  required="required">
  <option value="">Fruit Name</option>
  <?php
  include("configPDO.php");
  // We Will prepare SQL Query
  $STM = $dbh->prepare("SELECT DISTINCT  Fruitname FROM fruitsratelist");
  // bind parameters, Named parameters always start with colon(:)
  $STM->execute();
  // we will fetch records like this and use foreach loop to show multiple Results
  $STMrecords = $STM->fetchAll();
  foreach($STMrecords as $row)
  {
  echo"<option value='$row[0]'>$row[0]</option>"; 
  }      
  ?> 
  </select>
  
  </div>
  </div>
          
  
  <div class="control-group">
  <div class="controls">
  <input type="submit" name="submit" id="submit" class="btn btn-danger" value="Delete Fruit Records">
  </div>
  </div>
  </form>
  
  </div>
  </div>  
  

Connect to Database

4. configPDO.php file use a PDO (PHP Data Objects) for connecting MySQL Database.

• <?php
  // mysql hostname
  $hostname = 'localhost';
  // mysql username
  $username = 'root';
  // mysql password
  $password = '';
  // Database Connection using PDO
  try {
  $dbh = new PDO("mysql:host=$hostname;dbname=YourDatabaseName", $username, $password);
      }
  catch(PDOException $e)
      {
      echo $e->getMessage();
      }
  ?>

Prepare and Execute Delete Queries

5. Now we will discuss our FruitDMy.php which is used for getting values from the form and then Delete these in database using PDO query.

• <?php
  include('configPDO.php');
  if(isset($_POST["submit"])=="Delete Fruit Records")
  
  {
  // Define Variable
  $Fruitname1    =  $_POST[Fruitname1];     //Fruitname1
  
  // We Will prepare SQL Query
   $STM = $dbh->prepare("DELETE FROM fruitsratelist  WHERE Fruitname=:Fruitname1");
  // bind paramenters, Named paramenters alaways start with colon(:)
      $STM->bindParam(':Fruitname1', $Fruitname1);
  // For Executing prepared statement we will use below function
      $STM->execute(); 
  // We use header here for redirecting it to other page where we will show success message.    
  header( "location:AdminIndex.php?Fruitstatsdeleted=77083368");             
  }
  ?> 

Prepared Queries Methods

There are three various methods to write PDO queries.
• In this Demo we used named parameters key with prepared statement. Binding parameter is must before execution using this method.

• $STM = $dbh->prepare("DELETE FROM fruitsratelist  WHERE Fruitname=:Fruitname1");
  $STM->bindParam(':Fruitname1', $Fruitname1);
  $STM->execute();
  

OR
• Other method is to use unnamed parameters with question mark (?)

• $STM = $dbh->prepare("DELETE FROM fruitsratelist  WHERE Fruitname=?");
  $STM->bindParam(1, $Fruitname1);
  $STM->execute();
  

OR
• Below method is without binding and it can make code ripe for SQL Injections.

• $STM = $dbh->prepare("DELETE FROM fruitsratelist  WHERE Fruitname=$Fruitname1");
  $STM->execute();
  

• For Getting how many records Deleted we can use rowcount() function.

• $Records_Deleted= $STM->rowCount();
  

Show Success Message

6. After data Deleted We will redirected to Adminindex.php page where we will show success message using codes return from FruitDMy.php

• if($_GET["Fruitstatsdeleted"]==77083368)  
  {
  echo "<div class='alert alert-error'>"; 
  echo "<button type='button' class='close' data-dismiss='alert'>×</button>"; 
  echo "<h4>Updated.</h4>"; 
  echo "Fruit Name and all it rates deleted from this Demo System."; 
  echo "</div>";
  }

Tools Required

We used following tools and technologies for developing PHP Simple Delete using PDO in Bootstrap Tutorial.
• PHP as Server Side Scripting Language
• MySQL as a Database.
• Bootstrap as CSS Framework.
• JQuery as a service.
• jqBootstrapValidation for validating sign-in form.
• phpMyAdmin for creating database and tables.
• Sublime Text 2+ as a code editor.
• XAMPP as a package for Apache web server, PHP and MySQL.
• Google Chrome as a browser for testing.
Thanks for reading. Enjoy and share with friends.

Conclusion

We hope you will like PHP Simple Delete using PDO in Bootstrap Tutorial and find it easy. We used latest PDO (PHP Data Objects) Prepared statements in this tutorial with Bootstrap CSS Framework for making this quickly. For any query/suggestions please send message on ourFacebook Page.

PHP MySQL Easy CSV Data Insertion in Bootstrap using PDO Tutorial

PHP MySQL Easy CSV Data Insertion in Bootstrap using PDO is a tutorial in which you will learn how to import data in MySQL Database via CSV File while using PDO (PHP Data Objects) Prepared statements. We are using Bootstrap as CSS Framework in this tutorial for creating CSV File Upload Form and other functionality. for Demo we will make excel file in the format given in sample excel file.

For Source Code Please Click Here

 Then we will save it as csv (comma separated values) file and press CSV Upload Button and choose test.csv file and Press Save CSV Button. Data will be moved in the temporary table and after upload we will redirected to index.php page where message will be shown for success or failure. In index.php it will also show your uploaded data in a table. We will learn

• How to make a Form for CSV File Upload.
• How to create a Temporary Table.
• How to make a Connection Page
• How to make an Insertion Page using PDO Queries
• How to show a success and Warning message.

Source Code Folder contains following files and folders, below is the explanation of each.

• sql.txt contains full database structure along with sample data.
• index.php is file from where you can upload CSV File and view results.
• Uploadmypdo.php is file in which code of getting CSV File and Upload using PDO queries written.
• configPDO.php is a file which will create connection with database.
• Footer.php is a file which contains footer bar and form for CSV Upload.
• assets folder contains necessary css, icon, images and js files.

We use following for developing PHP MySQL Easy CSV Data Insertion in Bootstrap using PDO Tutorial.

• PHP as Server Side Scripting Language
• MySQL as a Database.
• Bootstrap as CSS Framework.
• JQuery as a service.
• jqBootstrapValidation for validating sign-in form.
• phpMyAdmin for creating database and tables.
• Sublime Text 2+ as a code editor.
• XAMPP as a package for Apache web server, PHP and MySQL.
• Google Chrome as a browser for testing.

1. First we will make a upload CSV button in index.php page and use data-toggle as modal and give href value as #fileupload

• <a href="#fileupload" data-toggle="modal" class"btn btn-primary btn-large">Upload CSV</a>
  

2. When we press upload CSV button, modal will be open which will display below form for Upload CSV. Form code is in footer.php page and its a included in index.php page.

• <div id="fileupload" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
              <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
                <h3 id="myModalLabel">Upload Data via CSV File</h3>
              </div>
              <div class="modal-body">
  <form class="form-horizontal" enctype="multipart/form-data" method="post" action="Uploadmypdo.php">
              <div class="control-group">
                <label class="control-label" for="inputName">Save CSV File</label>
                <div class="controls">
                <input type="hidden" name="MAX_FILE_SIZE" value="9999999" />
                <input class="btn btn-info" name="file" type="file" id="file" onchange="showCode()" onblur="showCode()" onclick="showCode" required="required"  />
                </div>
              </div>
              <div class="control-group">
                <div class="controls">
                  <button type="submit" class="btn">Save CSV</button>
                </div>
              </div>
            </form>
  
      </div>
  </div>

3. Now its time for creating sample database csvsignindb using sql.txt file which contains following table create queries and sample data for demo and test.
• statstrackertemp table contains fields like ServerName, HiMemUti, AvgMemUti, HiCpuUti, AvgCpuUti, HiIOPerSec, AvgIOPerSec, HiDiskUsage, AvgDsikUsage.

4. configPDO.php file use a PDO (PHP Data Objects) for connection to MySQL Databaseto avoid SQL injections.

• <?php
  // mysql hostname
  $hostname = 'localhost';
  // mysql username
  $username = 'root';
  // mysql password
  $password = '';
  // Database Connection using PDO
  try {
  $dbh = new PDO("mysql:host=$hostname;dbname=csvsignindb", $username, $password);
      }
  catch(PDOException $e)
      {
      echo $e->getMessage();
      }
  ?>

5. For inserting CSV Data in MySQL Database using PDO (PHP Data Objects) Prepared queries we will write code like below with explanation using comments.

• <?php 
   session_start();
  // mysql hostname
   $hostname = 'localhost';
  // mysql username
   $username = 'root';
  // mysql password
   $password = '';
  // Get Extension of the File.
   $extension= end(explode(".", basename($_FILES['file']['name'])));
  // isset Determines if a variable is set and is not NULL. Set Size Limit less then 10 MB=10485760 bytes. Extension must be CSV.
   if (isset($_FILES['file']) && $_FILES['file']['size'] < 10485760 && $extension== 'csv')
   {  
  // We will get csv file and save it in a $file
      $file = $_FILES['file']['tmp_name']; 
  //$handle is a valid file pointer to a file successfully opened by fopen(), popen(), or fsockopen(). fopen() used to open file.
      $handle = fopen($file, "r"); 
  // We will use try{} Catch() statements here.
       try { 
  // Database Connection using PDO
    $dbh = new PDO("mysql:host=$hostname;dbname=csvsignindb", $username, $password);
  // Truncate Table before insertion
    $STMR = $dbh->prepare("TRUNCATE TABLE statstrackertemp");
    $STMR->execute();
  // Prepare the statement for the insertion in the table
          $STM = $dbh->prepare('INSERT INTO statstrackertemp (ServerName, HiMemUti, AvgMemUti, HiCpuUti, AvgCpuUti, HiIOPerSec, AvgIOPerSec, HiDiskUsage, AvgDsikUsage) VALUES (?, ?, ?, ?, ?,?, ?, ?, ? )');
  //Check handel is True or False
     if ($handle !== FALSE) 
     {
  // fgets() Gets a line from file pointer and read the first line from $handle and ignore it.   
            fgets($handle);
  // While loop used here and  fgetcsv() parses the line it reads for fields in CSV format and returns an array containing the fields read.
            while (($data = fgetcsv($handle, 1000, ',')) !== FALSE)
      {
  // For Executing prepared statement we will use below function
               $STM->execute($data);
            }       
  //The file pointed to by handle will be closed.
            fclose($handle);
      
  // Closing MySQL database connection
         $dbh = null; 
  // If data inserted successfully we will redirect this page to index.php and show success message there with code 77083368
      header( "location:index.php?ServerStatsAdded=77083368"); 
      
        
     }
  
       }
  // Exceptions error will be thrown if Database not connected. 
    catch(PDOException $e)
    {
          die($e->getMessage());
       }
  
  
   }
   else 
   {
  // Error mesage id File type is not CSV or File Size is greater then 10MB.
      header( "location:index.php?ServerStatsAdded=37767");
   }
  ?>

6. After processing of CSV File it will redirected to index.php page where we will show success of failure message using codes return from Uploadmypdo.php

• if($_GET["ServerStatsAdded"]==77083368)  
  {
  echo "<div class='alert alert-success'>"; 
  echo "<button type='button' class='close' data-dismiss='alert'>×</button>"; 
  echo "Server Stats added in System."; 
  echo "</div>";
  }
  if($_GET["ServerStatsAdded"]==37767)  
  {
  echo "<div class='alert alert-block'>"; 
  echo "<button type='button' class='close' data-dismiss='alert'>×</button>";
  echo "<h4>Warning!</h4>"; 
  echo "Many Reasons for not adding stats. it can be wrong file format, file size greater then 10 MB, data already in system."; 
  echo "</div>"; 
  }

Thanks for reading. Enjoy and share with friends.

We hope you will find PHP MySQL Easy CSV Data Insertion in Bootstrap using PDO Tutorial very helpful and easy. PDO (PHP Data Objects) Prepared statements used in this tutorial along with Bootstrap CSS Framework for better user experience. For any query/suggestions please post a comment on our Facebook Page.

Freebie Complete PHP Project Bootstrap PDO Sign-In Jquery UI Autocomplete Validation

It is a freebie complete project for PHP beginners using PDO (PHP Data Objects) queries, Bootstrap, MySQL Database, JQuery UI, Jquery Validation Plug-in with full source code. Bootstrap CSS framework is used along with JQuery UI Autocomplete. For password change match password option is also good for users they want to design a sign up form. In server stats insertion form only double number allowed using regular expression. Jquery Validation plug-in used in this freebie project which works fine in all major browsers. It is a complete system , you can improve this and share with others. Enjoy it!
Click here for Details

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Now you have to choose one for designing your website in very quick time.
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