Iterating over a complex Associative Array in PHP

Question

Is there an easy way to iterate over an associative array of this structure in PHP:

The array $searches has a numbered index, with between 4 and 5 assoc

Answer 1

Looks like a good place for a recursive function, esp. if you'll have more than two levels of depth.

function doSomething(&$complex_array)
{
    foreach ($complex_array as $n => $v)
    {
        if (is_array($v))
            doSomething($v);
        else
            do whatever you want to do with a single node
    }
}

Answer 2

Nest two foreach loops:

foreach ($array as $i => $values) {
    print "$i {\n";
    foreach ($values as $key => $value) {
        print "    $key => $value\n";
    }
    print "}\n";
}

Answer 3

Can you just loop over all of the "part[n]" items and use isset to see if they actually exist or not?

Answer 4

I'm really not sure what you mean here - surely a pair of foreach loops does what you need?

foreach($array as $id => $assoc)
{
    foreach($assoc as $part => $data)
    {
        // code
    }
}

Or do you need something recursive? I'd be able to help more with example data and a context in how you want the data returned.

Answer 5

I know it's question necromancy, but iterating over Multidimensional arrays is easy with Spl Iterators

$iterator = new RecursiveIteratorIterator(new RecursiveArrayIterator($array));

foreach($iterator as $key=>$value) {
    echo $key.' -- '.$value.'<br />';
}

See

• http://php.net/manual/en/spl.iterators.php

Answer 6

You should be able to use a nested foreach statment

from the php manual

/* foreach example 4: multi-dimensional arrays */
$a = array();
$a[0][0] = "a";
$a[0][1] = "b";
$a[1][0] = "y";
$a[1][1] = "z";

foreach ($a as $v1) {
    foreach ($v1 as $v2) {
        echo "$v2\n";
    }
}