<?php $ArrayOfSums = [ 'Sum_1' => [ ['e' => 1000001, 'u' => 'Test1', 'a' => 775.00], ['e' => 26, 'u' => 'Test2', 'a' => 555.00], ], 'Sum_2' => [ ['e' => 1000001, 'u' => 'Test1', 'a' => 110.00], ], 'Sum_3' => [ ['e' => 1000001, 'u' => 'Test1', 'a' => 444.00], ], ]; $sums=array(); foreach($ArrayOfSums as $Offset=>$ArrayOfResults){ foreach($ArrayOfResults as $ResultOffset=>$Result){ $sums[$Offset]+=$Result["a"]; } } var_export($sums);
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Value for `_results` contains invalid data `array`