April 18, 2012
Printing UL LI nested in Foreach Loop
Question by HardCode
i have an array structure like
[members] => Members List | 26
[member.php?id=3] => John | 26-26
[member.php?id=4] => Alice | 26-26
[member.php?id=5] => Michel | 26-26
[news] => News details | 45
[alerts] > Alerts | 32
i traverse this using foreach loop. i want to print the Whole list as UL LI. The Members List will be an LI but when its childs comes (memeber.php?id=*) etc then it should inherit UL LI. I want the child to be in a nested LIs
CODE
$counter = 0;
foreach($array as $key => $values)
{
if($counter == 0)
{
echo "<ul>";
}
if($key != "" && $key != "END")
{
echo "<li>".$values."</li>";
}
if($key == "END")
{
echo "</ul>";
}
$counter++;
}
Answer by Muhammad Alvin
I don’t know exactly the problem you have. But i think, you want something like this:
<ul>
<li>
<a href="members">Members List</a>
<ul>
<li><a href="member.php?id=3">John</a></li>
<li><a href="member.php?id=4">Alice</a></li>
<li><a href="member.php?id=5">Michel</a></li>
</ul>
</li>
<li><a href="news">News details</a></li>
<li><a href="alerts">Alerts</a></li>
</ul>
If yes, then i suggest you to change your array structure. Array can also be nested. And it will be easier if you have something like this:
$data = array(
array('members', 'Members List', array(
array('member.php?id=3', 'John'),
array('member.php?id=4', 'Alice'),
array('member.php?id=5', 'Michel'),
)),
array('news', 'News details'),
array('alerts', 'Alerts')
);
- $data is array.
- Items in $data is array with at least 2 items. 1st item is href/url,
2nd item is label/text. If it has 3rd item, then it will be the
children (subitems). - Subitems is composed similar to items, where 1st item is href/url, 2nd
item is label/text.
Then, the following code will convert it to HTML:
echo '<ul>';
foreach ($data as $item) {
// $item[0] -> href/url, $item[1] -> label/text, $item[2] -> subitems
echo '<li>';
echo '<a href="' . $item[0] . '">' . $item[1] . '</a>';
if (isset($item[2])) { // if this item has subitems...
echo '<ul>';
foreach ($item[2] as $subitem) {
// $subitem[0] -> href/url, $subitem[1] -> label/text
echo '<li><a href="' . $subitem[0] . '">' . $subitem[1] . '</a></li>';
}
echo '</ul>';
}
echo '</li>';
}
echo '</ul>';
Answer by Starx
Your script is not working, because you have referenced the URLs as $key, but still accessing them using $url inside your loop.
Here is how you should do it.
$counter = 0;
foreach($array as $url => $values)
{
if($counter == 0)
{
echo "<ul>";
}
if($url != "" && $url != "END")
{
echo "<li>".$values."</li>";
}
if($url == "END")
{
echo "</ul>";
}
$counter++;
}
But a simple way to create the list from your array is this
//First remove the END key from the array, is not needed
echo "<ul>";
foreach($array as $link => $value) {
//THERE is no way $link can be ""
echo "<li><a href="$link">$value</a></li>";
}
echo "</ul>";
