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I need to use a foreach loop on a json in php, but i only want to return unique values
| Author | Votes | Δ |
|---|---|---|
| Kenth Söderholm | 0 | +1.31 |
| Maksym Semenykhin | 0 | +1.59 |
| N Muhammed Thamjeed | 0 | +1.27 |
| Progrock | -1 | -0.52 |
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