README

This tiny package contains an interface and an array-based implementation of the LIFO Stack data structure.

Interface

How to use it

$stack = new Stack(['A', 'B']);

$stack->push('C');
$stack->push('D');

$stack->isEmpty(); // returns false
$stack->count(); // returns 4

$stack->top(); // output 'D'
$stack->pop(); // returns 'D'

$array = $stack->toArray(); // return ['A', 'B', 'C']

foreach ($stack as $element) {
    // i=0: $element = 'C'
    // i=1: $element = 'B'
    // i=2: $element = 'A'
}

$stack->isEmpty(); // returns true 

Tests and Coverage

All tests are passing with no warnings and code coverage is 100%.