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PHP OOP with AJAX CRUD using PDO - Delete

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Source Code
Hi there, In previous part we have already made discussing on how to create, select and update data using Ajax method with Object Oriented PHP programming style and we have made daynamic database query into DB class. So now we make a method into DB class for delete query then go to index.php file we will write jquery code for delete row without page refresh by ajax response. we have not only how to you delete data from mysql Database even you can learn how to delete uploaded image from folder path without page refresh with we use When will successfully delete row data then we show success alert, We not use browser default alert, We have use sweet alert must be load sweet js file. If you can use so First include css and js files by using ofline Download or CDN links for these files. So we have create a delete method this method will delete from database with unlink before uploaded image. I hope you understand. Now do this and Fellow our video tutorial We have also provide youtube Video in this post. In next video tutorial we will make discussing on how to select rows from Mysql table by using AJAX response. So please share my post and go to my youtube channel and subscribe and share videos with your friends. Thanks Next Tutorilas Link these:
    Files structure Fellow:
  • Application root folder
    • upload
    • //This Folder into upload image and delete from this folder
    • DB.php
    • //This file will handle for database connection and delete,Select, upadte ,insert execute query
    • action.php
    • //This file will handle for delete, update,Select, Insert data into Database Table
    • index.php
    • //This file for delete,upadte , insert form, view data

Sourse Code:

  • DB.php - database connection and query Execute

  • <?php
      class DB{
        public $DBconnect;
        private $hostName = "localhost";
        private $userName = "root";
        private $userPass = "";
        private $DBName = "office_employee";
    
        public function __construct(){
          $this->DBConnection();
        }
        public function delete($table,$cond,$limit=1){
          $sql = "DELETE FROM $table WHERE $cond LIMIT $limit ";
          return $this->DBconnect->exec($sql);
        }
    
        public function DBConnection(){
          try{
            $this->DBconnect = new PDO('mysql:host='.$this->hostName.';dbname='.$this->DBName,$this->userName,$this->userPass);
          }catch(PDOException $e){
            echo 'Connection Fail..'.$e->getMessage();
          }
        }
        public function insert($table,$data){
          $keys = implode(',', array_keys($data));
          $values = ":".implode(",:", array_keys($data));
    
          $sql = "INSERT INTO $table($keys) VALUES($values)";
          $stmt = $this->DBconnect->prepare($sql);
    
          foreach ($data as $key => $value) {
            $stmt->bindValue(":$key",$value);
          }
          return $stmt->execute(); 
    
    
        } 
        
        public function select($sql){
          $stmt = $this->DBconnect->prepare($sql);
          $stmt->execute();
          return $stmt->fetchAll(PDO::FETCH_ASSOC);
        }
    
        public function update($table,$data,$cond){
          $keys = '';
          foreach ($data as $key => $value) {
            $keys .= "$key=:$key,";
          }
          $keys = rtrim($keys,",");
    
          $sql = "UPDATE $table SET $keys WHERE $cond ";
          $stmt = $this->DBconnect->prepare($sql);
          foreach ($data as $key => $value) {
            $stmt->bindValue(":$key",$value);
          }
    
          return $stmt->execute(); 
        }
    
        
    
        public function upload($file){
          $extention = explode('.', $file['name']);
          $newName = rand().'.'.$extention[1];
          $destination = './upload/'.$newName;
          move_uploaded_file($file['tmp_name'], $destination);
          return $newName;
    
        }
        
    
      }
    
    ?>
    
  • action.php

  • 
    
  • index.php

  • 
    
  • Database file sql

  • 
    
    --
    -- Database: `office_employee`
    --
    
    -- --------------------------------------------------------
    
    --
    -- Table structure for table `tbl_employee_info`
    --
    
    CREATE TABLE `tbl_employee_info` (
      `id` int(11) NOT NULL,
      `image` varchar(255) NOT NULL,
      `name` varchar(255) NOT NULL,
      `designation` varchar(255) NOT NULL,
      `sex` varchar(255) NOT NULL
    ) ENGINE=InnoDB DEFAULT CHARSET=latin1;
    
    --
    -- Dumping data for table `tbl_employee_info`
    --
    
    INSERT INTO `tbl_employee_info` (`id`, `image`, `name`, `designation`, `sex`) VALUES
    (19, '6955.jpg', 'Roman Mondol', 'Teacher', '1'),
    (49, '31792.jpg', 'Programmer Rayhan', 'Software Engineer (JAVA and PHP)', '1'),
    (50, '12457.png', 'Aslam Khan', 'Telecommunication Enginner', '1'),
    (53, '11100.jpg', 'Cara Stevens', 'Software Engineer', '2');
    
    --
    -- Indexes for dumped tables
    --
    
    --
    -- Indexes for table `tbl_employee_info`
    --
    ALTER TABLE `tbl_employee_info`
      ADD PRIMARY KEY (`id`);
    
    --
    -- AUTO_INCREMENT for dumped tables
    --
    
    --
    -- AUTO_INCREMENT for table `tbl_employee_info`
    --
    ALTER TABLE `tbl_employee_info`
      MODIFY `id` int(11) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=54;
    /*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
    /*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
    /*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
    
    
    

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    Hi there! I am Rayhan Mondol, a PHP & JAVA Developer and ICT task is my programming blog. I'm fond of developing modern web applications. Contact me, I accept the paid task

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