changed a lot of things

README.md

@@ -1,61 +1,144 @@
 # php-crud
 this is a helper for php crud operation.
 
-<hr>
+
 
 # How to Use
 
-<img src="https://imgbbb.com/images/2019/04/14/Screenshot-56.png" alt="folder sceenshot" />
+<img src="https://imgbbb.com/images/2019/04/14/Screenshot-56.png" alt="folder screenshot" />
+
+Create a new file `index.php`
+
+Then, open `index.php` & `config.php` in your text editor.
 
-create a new file `index.php` 
+In `config.php`, you need to set up the database connection first:
 
-then , open `index.php` & `config.php` in your text editor .
+```php
+define("DB_HOST", "localhost"); // your host name
+define("DB_USER", "your_username"); // your database username
+define("DB_PASS", "your_password"); // your database password
+define("DB_NAME", "your_database_name"); // your database name
 
-In `config.php` , You need to setup Database connection as first.
+// Message Settings
+define('insertSuccess', 'Insert Successfully');
+define('updateSuccess', 'Update Successfully');
+define('deleteSuccess', 'Deleted Successfully');
 
-then `index.php`,
 
-put these at the top ,
+In index.php, include the necessary files at the top:
 
 ``` include 'database/index.php';```
+include 'db_connection.php';
+include 'config.php';
 
 # For Insert :
+```php
+`DB::insert($table, $data);
+````
+`$table` = its your table name,
 
-`DB::insert($table, $data);`
+`$data`: An associative array where the key will be the column name of your table.
 
-`$table` = its your table name,
+### Example :
+````php
+$table = 'users';
+$data = [
+    'name' => 'John Doe',
+    'email' => 'john@example.com'
+];
+DB::insert($table, $data);
+````
+
+# For selectAll :
+````php
+DB::select($table);
+````
+`$table`: The name of your table. 
+
+### Example :
+
+````php
+$results = DB::selectAll($table);
+
+foreach ($results as $row) {
+    echo $row['name'];
+}
+````
 
-`$data` = A array ,where key will be the column of your table.
+# For Select with Conditions :
 
-# For select :
+````php
+$conditions = ['id' => 1, 'status' => 'active'];
+
+$results = DB::selectWithConditions($table, $conditions);
+
+foreach ($results as $row) {
+    echo $row['name'];
+}
+````
+`$table`: The name of your table.
+`$conditions`: An associative array of column names and values for the WHERE clause.
 
-`DB::select($table);`
 
 ### Example :
 
-```bash
-$results = DB::select($table);
+````php
 
-while ($rows = $results->fetch_assoc()) {
+$table = 'users';
+$conditions = ['status' => 'active'];
+$results = DB::selectWithConditions($table, $conditions);
 
-	echo $rows['name'];
+foreach ($results as $row) {
+    echo $row['name'];
 }
-```
+````
+
 
 
 # For Update : 
 
-`DB::update($table, $data, $id);`
+````php
+$data = ['name' => 'New Name'];
+$conditions = ['id' => 1];
+DB::update($table, $data, $conditions);
+````
 
-# For Delete : 
+`$table`: The name of your table.
+`$data`: An associative array where the key will be the column name of your table.
+`$conditions`: An associative array of column names and values for the WHERE clause
 
-`DB::delete($table, $id);`
+### Example:
+````php 
+$table = 'users';
+$data = ['name' => 'Jane Doe'];
+$conditions = ['id' => 1];
+DB::update($table, $data, $conditions);
+````
 
----
+
+# For Delete : 
+````php
+$conditions = ['id' => 1];
+DB::delete($table, $conditions);
+````
+`$table`: The name of your table.
+`$conditions`: An associative array of column names and values for the WHERE clause.
+
+
+### Example 
+```php 
+$table = 'users';
+$conditions = ['id' => 1];
+DB::delete($table, $conditions);
+```
 
 ### For more Links
 
-- [GitHub](https://github.com/IANirab/)
+- [GitHub](https://github.com/Ok9xNirab/)
 - [Facebook](https://web.facebook.com/istiaq.nirab.1)
 
 **Enjoy!**
+
+### Few Notes after the update 
+all `$conditions` are supposed to be a key value pairs where keys are column names and values are values of those columns 
+

config.php

@@ -8,3 +8,5 @@
 define('insertSuccess', 'Insert Successfully');
 define('updateSuccess', 'Update Successfully');
 define('deleteSuccess', 'Deleted Successfully');
+
+//suggest defining the tables here also as constants to avoid typos

database/db_connection.php

@@ -12,23 +12,28 @@ class dbConnection
     private $user;
     private $pass;
     private $dbname;
+    private $conn;
 
     public function __construct($host, $user, $pass, $dbname)
     {
         $this->host = $host;
         $this->user = $user;
         $this->pass = $pass;
         $this->dbname = $dbname;
+
+
+        try {
+            $dsn = "mysql:host=$this->host;dbname=$this->dbname";
+            $this->conn = new PDO($dsn, $this->user, $this->pass);
+            $this->conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+        } catch (PDOException $e) {
+            echo "Database Not Connected: " . $e->getMessage();
+        }
     }
 
-    public function connection()
+    public function getConnection()
     {
-        // Create connection
-        $conn = new mysqli($this->host, $this->user, $this->pass, $this->dbname);
-        // Check connection
-        if ($conn->connect_error) {
-            echo "Database Not Connected !!";
-        }
-        return $conn;
+        return $this->conn;
     }
 }
+?>

database/delete.php

@@ -4,18 +4,47 @@ class delete
 {
     private $conn;
     private $table;
+
+    /**
+     * Constructor to initialize connection and table.
+     *
+     * @param PDO $conn  The PDO connection object.
+     * @param string $table  The name of the table.
+     */
     public function __construct($conn, $table)
     {
         $this->conn = $conn;
         $this->table = $table;
     }
-    public function deleteData($id)
+
+    /**
+     * Deletes records from the table based on the provided conditions.
+     *
+     * @param array $conditions  An associative array of column names and values for the WHERE clause.
+     * @return string|null  The success message or null if an error occurs.
+     */
+    public function deleteData($conditions)
     {
-        $delete = "DELETE FROM " . $this->table . " WHERE id='$id'";
-        $result = $this->conn->query($delete);
-        $this->conn->close();
-        if ($result != null) {
-            return $dbname = deleteSuccess;
+        $whereClause = "";
+        $params = [];
+
+        foreach ($conditions as $column => $value) {
+            $whereClause .= "$column = :$column AND ";
+            $params[$column] = $value;
+        }
+
+        // Remove the trailing ' AND '
+        $whereClause = rtrim($whereClause, " AND ");
+
+        $stmt = $this->conn->prepare("DELETE FROM $this->table WHERE $whereClause");
+
+        try {
+            $stmt->execute($params);
+            return deleteSuccess;
+        } catch (PDOException $e) {
+            echo "Error: " . $e->getMessage();
+            return null;
         }
     }
 }
+?>