<?php
//Дан набор из N точек на плоскости (для простоты можно считать, что у всех точек целочисленные координаты).
//Найдите минимальное расстояние между двумя точками из этого набора.
$points = array(10);
function findMinLength(array $points)
{
    foreach ($points as $point) {
        foreach ($points as $point2) {
            if ($point != $point2) {
                $distance = abs($point - $point2);
                if (!isset($min)) {
                    $min = $distance;
                } elseif ($distance < $min) {
                    $min = $distance;
                }
            }
        }
    }
    return $min;
}
print_r(findMinLength($points));

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