[Solved] php mysql category subcategory list link [closed]

by


You can do like this.

Test data:

create table tbl_cat (id int, cat_name varchar(32));
insert into tbl_cat(id, cat_name) values(1, "category1"), (2, "category2");
create table tbl_subcat (id int, cat_id int, subcat_name varchar(32));
insert into tbl_subcat(id, cat_id, subcat_name) values(1, 1, "subcat11"), (2, 1, "subcat12"), (3, 1, "subcat13"), (4, 2, "subcat21");

Then, PHP script can be written like this:

<?php 
$servername = "localhost";
$username = "your_user";
$password = "your_password";
$dbname = "test";


// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

$sql = "SELECT cat_name, subcat_name FROM tbl_cat LEFT JOIN tbl_subcat ON tbl_cat.id = tbl_subcat.cat_id;";
$result = $conn->query($sql);

$last_category = "";
if ($result->num_rows > 0) {
    // output data of each row
    while($row = $result->fetch_assoc()) {
        $cat_name = $row["cat_name"];
        if ($cat_name != $last_category) {
            echo "Category: " . $cat_name .PHP_EOL;
            $last_category = $cat_name;
        }
        echo "\tSubcategory: " . $row["subcat_name"] .PHP_EOL;
    }
} else {
    echo "0 results";
}
$conn->close();
?>

solved php mysql category subcategory list link [closed]