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detect-unnecessary-loops

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Detects unnecessary loop patterns in PHP code. Finds nested loop inefficiency, redundant iterations, in-loop operations that could be batched, loop invariant code.

skills/detect-unnecessary-loops/SKILL.md

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# Unnecessary Loop Detection

Analyze PHP code for inefficient loop patterns.

## Detection Patterns

### 1. Nested Loop Inefficiency

```php
// O(n*m): Nested search
foreach ($users as $user) {
    foreach ($orders as $order) {
        if ($order->getUserId() === $user->getId()) {
            // Found order for user