CRUD Using Object Oriented Concept in PHP
OOP(Object Oriented Programming) is a programming pattern that uses real-world concepts such as object, inheritance, class, etc. OOP is best suitable for such a type of application that is scaleable. In this blog, we will learn CRUD operation using OOP. Let’s see the following steps:
Step1: Create Database name oop:
CREATE DATABASE oop;
Stpe2: Create a form table in the database:
CREATE TABLE form (
id INT NOT NULL PRIMARY KEY AUTO_INCREMENT,
name VARCHAR(100) NOT NULL,
email VARCHAR(255) NOT NULL,
phone BIG INT(10) NOT NULL
);
Step3: Create a Dbconnect.php file and save it in the classes folder, write the following code:
<?php
class Dbconnect
{
private $_localhost = 'localhost';
private $_user = 'root';
private $_password = '';
private $_dbname = 'oop';
protected $connection;
public function __construct()
{
if(!isset($this-> connection))
{
$this->connection = new mysqli($this->_localhost , $this->_user , $this->_password , $this->_dbname);
}
return $this->connection;
}
}
?>
Step4: Create a file Crud.php save in classes folder and write the following code:
<?php
include_once ('Dbconnect.php');
class Crud extends Dbconnect
{
public $columns="";
public $values="";
public $column="";
public $value="";
public function __construct()
{
parent::__construct();
}
public function selectalldata($table)
{
$select="SELECT * FROM $table";
$select1=$this->connection->query($select);
return $select1;
}
public function selectbyid($table,$id)
{
$sel= "SELECT * FROM $table where id=$id";
$sel1=$this->connection->query($sel);
return mysqli_fetch_array($sel1);
}
public function insert($data,$table)
{
//print_r($data);
foreach($data as $this->column => $this->value)
{
$this->columns .= ($this->columns == "") ? "" : ", ";
$this->columns .= $this->column;
$this->values .= ($this->values == "") ? "" : ", ";
$this->values .= "'".$this->value ."'";
//echo $this->values;
}
$insert= ("INSERT into $table ($this->columns) values ($this->values)");
//echo $insert;
$insert1= $this->connection->query($insert);
}
public function update($data,$table,$id)
{
foreach ($data as $this->column => $this->value)
{
$update=("UPDATE $table SET $this->column = '$this->value' WHERE id= '$id'");
// echo $update;
$this->connection->query($update);
}
return true;
}
function deletedata($table,$where)
{
$delete=("DELETE FROM $table WHERE id=$where");
$this->connection->query($delete);
return true;
}
public function escape_string($value)
{
return $this->connection->real_escape_string($value);
}
}
?>
Step5: Create an add.php file and write the following code:
<?php
include_once ("classes/crud.php");
$crud= new crud();
if(isset($_POST['submit']))
{
$data= array(
"name" => $crud->escape_string($_POST['name']),
"email" => $crud->escape_string($_POST['email']),
"phone" => $crud->escape_string($_POST['phone'])
);
$crud->insert($data,'form');
if($data)
{
echo 'insert successfully';
header('location:listing.php');
}
else
{
echo 'try again' ;
}
}
?>
<!DOCTYPE html>
<html>
<head>
<title>add in oops</title>
<link rel="stylesheet" type="text/css" href="css/style.css">
<link href="https://fonts.googleapis.com/css?family=Poppins&display=swap" rel="stylesheet">
</head>
<body>
<form method="POST" name="form">
<label>name</label>
<input type="text" name="name"><br/>
<label>email</label>
<input type="text" name="email"><br/>
<label>phone</label>
<input type="text" name="phone"><br/>
<input type="submit" name="submit">
</form>
</body>
</html>
Step6: Create a listing.php file and write the following code:
<?php
include_once ("classes/crud.php");
if(!empty($_GET['delid']))
{
$id=$_GET['delid'];
$crud= new crud();
$crud->deletedata("form",$id);
header('location:listig.php');
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<title>Listing</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<table class="table table-striped">
<thead>
<tr>
<th>Name</th>
<th>Mobile</th>
<th>Email</th>
<th>Edit</th>
<th>delete</th>
</tr>
</thead>
<tbody>
<?php
$crud= new crud();
$result = $crud->selectalldata("form");
while($data = mysqli_fetch_array($result))
{
?>
<tr>
<td><?php echo $data['name']; ?></td>
<td><?php echo $data['phone']; ?></td>
<td><?php echo $data['email']; ?></td>
<td><a href="edit.php?editid=<?php echo $data['id'];?>">edit</td>
<td><a href="listing.php?delid=<?php echo $data['id'];?>" onclick=" return confirm('Do You really want to delete this data')">delete</td>
</tr>
<?php } ?>
</tbody>
</table>
</div>
</body>
</html>
Step7: Create an edit.php file and write the following code:
<?php
include_once ("classes/crud.php");
$id = $_GET['editid'];
$crud= new crud();
$data = $crud->selectbyid('form',$id);
if(isset($_POST['submit']))
{
$data= array(
"name" => $crud->escape_string($_POST['name']),
"email" => $crud->escape_string($_POST['email']),
"phone" => $crud->escape_string($_POST['phone'])
);
$crud->update($data,'form',$id);
if($data)
{
echo 'updated successfully';
header('location:listing.php');
}
else
{
echo 'try again' ;
}
}
?>
<!DOCTYPE html>
<html>
<head>
<title>Edit in oops</title>
<link rel="stylesheet" type="text/css" href="css/style.css">
<link href="https://fonts.googleapis.com/css?family=Poppins&display=swap" rel="stylesheet">
</head>
<body>
<form method="POST" name="form">
<label>name</label>
<input type="text" name="name" value="<?php echo $data['name'];?>"><br/>
<label>email</label>
<input type="text" name="email" value="<?php echo $data['email'];?>"><br/>
<label>phone</label>
<input type="text" name="phone" value="<?php echo $data['phone'];?>"><br/>
<input type="submit" name="submit">
</form>
</body>
</html>
Note: In this blog, I have created a Crud.php file which is very useful to create an admin panel for website development, this is only a crud functionality for beginner developers to learn more about the object-oriented concept.
Categories: web development php
