Example of the maximum number of consecutive elements in a PHP-positive array

The problem is to give the array, which is composed of positive and negative digits, to find the maximum value of the substring of contiguous elements in the array. The following is an example of the implementation of PHP, you need friends can refer to the following

PHP implementation of the maximum number of positive and negative array of sub-sequence, the array of numbers, which consists of positive and negative digits, to find the array of contiguous elements of the maximum size of the child array.   It's actually a backpack variant.   The code is as follows: <?php $list = Array (1,-3,-5,-7,8,9,-11,5); $cur = 0; $term = 0; $res = 0;   $begin = 0;  foreach ($list as $k => $v) {$cur + = $v;   if ($cur < 0) {$cur = 0;  $begin = $k + 1;   } if ($cur > $res) {$res = $cur;  $term = $k;   }} $max _seq = Array_slice ($list, $begin, ($term-$begin) + 1); Echo $res. ','; Print_r ($max _seq); 17,array ([0] => 8 [1] => 9)