acc-find-boundary-issues
Boundary Issue Detection
Analyze PHP code for boundary and range violations.
Detection Patterns
1. Array Index Out of Bounds
// BUG: No bounds check
$items = [1, 2, 3];
$last = $items[count($items)]; // Off by one, should be count - 1
// BUG: Hardcoded index
$third = $data[2]; // May not have 3 elements
// BUG: Negative index
$item = $array[$index]; // $index could be negative
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