How to loop an array in array (dynamic navigation) - php

Question

I have an array with some items. Each array could have (or not) an subarray, also with some items.
How can I call the subarray in a loop? It is difficult to describe, here is the code. I know the code/syntax is not correct, but the syntax should clarify my problem:
<?php
$subitemsA = array(
'subA1' => array('num'=>65, 'text'=>'Labor', 'url'=>'#'),
'subA2' => array('num'=>44, 'text'=>'Rare', 'url'=>'#'),
);
$subitemsB = array(
'subB1' => array('num'=>0, 'text'=>'subB1', 'url'=>'#'),
'subB2' => array('num'=>0, 'text'=>'subB2', 'url'=>'#'),
'subB3' => array('num'=>0, 'text'=>'subB3', 'url'=>'#')
);
$navArray = array(
'Home' => array('num'=>0, 'text'=>'Home', 'url'=>'#'),
'Info' => array('num'=>0, 'text'=>'Info', 'url'=>'#', 'subArray'=>$subitemsA),
'Sport' => array('num'=>0, 'text'=>'Sport', 'url'=>'#', 'subArray'=>$subitemsB),
);
$html = '';
foreach($navArray as $item) {
$html .= "<li>";
$html .= "<a href='{$item['url']}'><i class='abc'></i>{$item['text']}</a>\n";
if (count($navArray) > 3) {
foreach($navArray.subArray as $subitem) {
$html .= "<li>";
$html .= "<a href='{$subitem['url']}'>{$subitem['text']}</a>\n";
$html .= "</li>";
}
}
$html .= "</li>";
}
The first foreach loop works. But how can I access the subArray of Info and Sport?

Answer 1

You need a three level foreach for this to work -
foreach($navArray as $key => $item) {
$html .= "<li>";
$html .= "<a href='{$item['url']}'><i class='abc'></i>{$item['text']}</a>\n";
foreach ($item as $itemkey => $value) {
if (is_array($value)) { //Now Check if $value is an array
foreach($value as $valuekey => $subitem) { //Loop through $value
$html .= "<li>";
$html .= "<a href='{$subitem['url']}'>{$subitem['text']}</a>\n";
$html .= "</li>";
}
}
}
$html .= "</li>";
}

Answer 2

This is an answer to your question in more general way: How to deal with multi-level nested array using recursion and template.
function parseArray(array $navArray, &$html, $depth = 0) {
foreach ($navArray as $item) {
$html .= "<li>";
// this function use template to create html
$html .= toHtml($item['url'], $item['text'], $depth);
foreach ($item as $subItem) {
if (is_array($subItem)) {
// use recursion to parse deeper level of subarray
parseArray($item, $html, $depth + 1);
}
}
$html .= "</li>";
}
}
function toHtml($url, $text, $depth)
{
$template = '';
if ($depth == 0) {
$template = '<a href=\'{{url}}\'><i class=\'abc\'></i>{{text}}</a>\n';
} elseif ($depth >= 1) {
$template = '<a href=\'{{url}}\'>{{text}}</a>\n';
}
// define more template for deeper level here if you want
$template = str_replace('{{url}}', $url, $template);
$template = str_replace('{{text}}', $text, $template);
return $template;
}
$html = '';
parseArray($navArray, $html);
Just hurrily forge this code out of mind, haven't test it yet. Hope it help.
Regards,