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<?php // these are subarrays containing 1 element each $json = '[{"rate":3},{"rate":4},{"rate":3},{"rate":5}]'; // decode it to an array $array = json_decode($json, true); // extract the "rate" column values from each subarray and sum them echo array_sum(array_column($array, 'rate'));
Output for git.master, git.master_jit, rfc.property-hooks
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