# LeetCode 2. Add Two Numbers

Here is my solution to Add Two Numbers problem in PHP:

``````/**
* Definition for a singly-linked list.
* class ListNode {
*     public \$val = 0;
*     public \$next = null;
*     function __construct(\$val = 0, \$next = null) {
*         \$this->val = \$val;
*         \$this->next = \$next;
*     }
* }
*/
class Solution {

/**
* @param ListNode \$l1
* @param ListNode \$l2
* @return ListNode
*/
\$ans = new ListNode(0, null);
\$p = \$l1;
\$q = \$l2;
\$current = \$ans;
\$carry=0;

while (\$p != null || \$q != null) {
\$x = isset(\$p) ? \$p->val : 0;
\$y = isset(\$q) ? \$q->val : 0;
\$sum = \$carry + \$x + \$y;
\$carry = (int) (\$sum/10);
\$current->next = new ListNode(\$sum%10);
\$current = \$current->next;
if (\$p != null) \$p = \$p->next;
if (\$q != null) \$q = \$q->next;
}
if (\$carry > 0) {
\$current->next = new ListNode(\$carry);
}

return \$ans->next;
}
}
``````
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