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@ 2020-04-09T18:01:46Z

<?php

$a = [
    11.12,9.29
    ];
    $b = 20.41;
    if(array_sum($a) !== $b) {
        echo "ERROR: " . (array_sum($a) - $b);
    }

Output
Performance
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References
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array_sum: documentation ( source)

preferences:dark modelive preview

46.08 ms | 402 KiB | 5 Q