Using recursion to build navigation

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抹茶落季 2020-12-15 01:35

I\'m building navigation for a site and for the life of me I can\'t figure out recursion. I have all my data stored via MySQL using this design:

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孤街浪徒 (楼主)

2020-12-15 02:09
I have the same above code with little bit modification, so that a user can apply different css on each level of menu, now its showing classes of sub menu like child-class1 when its in 1st sub menu , and it will show child-class2 when its in 2nd sub menu and so on...
```
  %s
```

';
}
else
{
    if($n==NULL)
    {
        $level=1;
    }
    else
    {
        $level=$n;
    }
    $outputHtml = '%s';  
} 
$childrenHtml = '';
foreach($items as $item)
{
    if ($item['parent'] == $parent) {
        $hasChildren = true;
        $childrenHtml .= ''.$item['ptitle'].'';
        $next = ++$level;
        $childrenHtml .= buildNavigation($items, $item['pageid'],$next);         
        $childrenHtml .= '';           
    }
}

// Without children, we do not need the

 tag.
if (!$hasChildren) {
    $outputHtml = '';
}

// Returns the HTML
return sprintf($outputHtml, $childrenHtml);
}
echo  buildNavigation($ppages);
?>

it will show out put like this

    
      
        page 1
           
              
                 this is child page
                  
                     
                        child of child

I would like to thanks Mr @Maxime Morin.

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