PHP – How to determine the first and last iteration in a for each loop

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

$i = 0;
$len = count($array);
foreach ($array as $item) {
    if ($i == 0) {
        // first
    } else if ($i == $len - 1) {
        // last
    }
    // …
    $i++;
}

$arr = array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);

foreach ($arr as $a) 
{

// This is the line that does the checking
if (!each($arr)) echo "End!\n";

echo $a."\n";

}

//Store the last key
$lastkey = key(end($array)); 
foreach($array as $key => $element) 
{
    ....do array stuff
    if ($lastkey === key($array))
        echo 'LAST ELEMENT!';
}

foreach($array as $element) {
    if ($element === reset($array))
        echo 'FIRST ELEMENT!';

    if ($element === end($array))
        echo 'LAST ELEMENT!';
}

foreach($array as $key => $element) 
{
    reset($array);
    if ($key === key($array))
        echo 'FIRST ELEMENT!';

    end($array);
    if ($key === key($array))
        echo 'LAST ELEMENT!';
}

reset($array);
$first = key($array);
foreach($array as $key => $element) 
{
    if ($key === $first)
        echo 'FIRST ELEMENT!';
}

$len = count($array);
foreach ($array as $index => $item) {
    if ($index == 0) {
        // first
    } else if ($index == $len - 1) {
        // last
    }
}

$firstElement = true;

foreach ($reportData->result() as $row) 
{
       if($firstElement) { echo "first element"; $firstElement=false; }
       // Other lines of codes here
}