How to determine the first and last iteration in a foreach loop?

Question

The question is simple. I have a foreach loop in my code:

foreach($array as $element) {
    //code
}

In this loop, I want to r

Answer 1

1: Why not use a simple for statement? Assuming you're using a real array and not an Iterator you could easily check whether the counter variable is 0 or one less than the whole number of elements. In my opinion this is the most clean and understandable solution...

$array = array( ... );

$count = count( $array );

for ( $i = 0; $i < $count; $i++ )
{

    $current = $array[ $i ];

    if ( $i == 0 )
    {

        // process first element

    }

    if ( $i == $count - 1 )
    {

        // process last element

    }

}

2: You should consider using Nested Sets to store your tree structure. Additionally you can improve the whole thing by using recursive functions.