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16 March, 2022

Create Tree View and Get category and subcategory in php

 Programing Coderfunda     March 16, 2022     php     No comments   

 

Create Tree View and Get category and subcategory in php


Create categories table


CREATE TABLE `categories` (
`id` int(11) NOT NULL,
`parent_id` int(11) NOT NULL,
`category_name` varchar(100) DEFAULT NULL,
`is_active` tinyint(1) NOT NULL,
`created_at` datetime NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
Copy

Database connection

Create function dbconnect()


<?php
function dbconnect(){
	$host = "localhost";
	$dbuser = "root";
	$dbpass = "";
	$dbname = "corephp";

	$conn = new mysqli($host, $dbuser, $dbpass, $dbname);

	if($conn->connect_error){
		die("Connection failed: ".$conn->connect_error);
	}
	
	return $conn;
}
?>
Copy

Create function categories

Get all parent categories


<?php 
function categories()
{
	$conn = dbconnect();
	
	$sql = "SELECT * FROM categories WHERE parent_id=0";
	$result = $conn->query($sql);
	
	$categories = array();
	
	while($row = $result->fetch_assoc())
	{
		$categories[] = array(
			'id' => $row['id'],
			'parent_id' => $row['parent_id'],
			'category_name' => $row['category_name'],
			'subcategory' => sub_categories($row['id']),
		);
	}
	
	return $categories;
}
?>
Copy

Create function sub categories

Get all sub categories


function sub_categories($id)
{	
	$conn = dbconnect();
	
	$sql = "SELECT * FROM categories WHERE parent_id=$id";
	$result = $conn->query($sql);
	
	$categories = array();
	
	while($row = $result->fetch_assoc())
	{
		$categories[] = array(
			'id' => $row['id'],
			'parent_id' => $row['parent_id'],
			'category_name' => $row['category_name'],
			'subcategory' => sub_categories($row['id']),
		);
	}
	return $categories;
}
Copy

Create viewsubcat function

Get all sub categories for view


<?php
function viewsubcat($categories)
{
	$html = '<ul class="sub-category">';
	foreach($categories as $category){

		$html .= '<li>'.$category['category_name'].'</li>';
		
		if( ! empty($category['subcategory'])){
			$html .= viewsubcat($category['subcategory']);
		}
	}
	$html .= '</ul>';
	
	return $html;
}
?>
Copy

Create view file

Get all categories and sub categories


<?php $categories = categories(); ?>
<?php foreach($categories as $category){ ?>
		<ul class="category">
			<li><?php echo $category['category_name'] ?></li>
		<?php 
			if( ! empty($category['subcategory'])){
				echo viewsubcat($category['subcategory']);
			} 
		?>
	</ul>
<?php } ?>
Copy

Output

Dynamic MenuTree ViewTree View in PHP
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