In PHP, what strategies can be employed to display hierarchical data from MySQL tables in a more organized manner?

When displaying hierarchical data from MySQL tables in PHP, one strategy is to use recursive functions to traverse the tree structure and display the data in a more organized manner. By recursively fetching and displaying child nodes, you can create a nested list or tree view of the data. 

<?php

function displayHierarchy($parent_id, $level = 0) {
    // Fetch data from MySQL table based on parent_id
    // Display data at current level
    echo str_repeat('-', $level) . $data['name'] . "<br>";
    
    // Fetch child nodes
    $children = fetchChildren($parent_id);
    
    // Recursively display child nodes
    foreach ($children as $child) {
        displayHierarchy($child['id'], $level + 1);
    }
}

// Initial call to displayHierarchy function with root parent_id
displayHierarchy(0);

?>

Keywords

PHP MySQL hierarchical data display organized manner

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