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

Using a Boolean variable is still the most reliable, even if you want to check the first appearance of a $value (I found it more useful in my situation and in many situations), such like this:

$is_first = true;

foreach( $array as $value ) {
    switch ( $value ) {
        case 'match':
            echo 'appeared';

            if ( $is_first ) {
                echo 'first appearance';
                $is_first = false;
            }

            break;
        }
    }

    if( !next( $array ) ) {
        echo 'last value';
    }
}

Then how about !next( $array ) to find the last $value which will return true if there's no next() value to iterate.

And I prefer to use a for loop instead of foreach if I were going to use a counter, like this:

$len = count( $array );
for ( $i = 0; $i < $len; $i++ ) {
    $value = $array[$i];
    if ($i === 0) {
        // first
    } elseif ( $i === $len - 1 ) {
        // last
    }
    // …
    $i++;
}