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Online Sandbox for SQL and PHP: Write, Run, Test, and Share SQL Queries and PHP Code
<?php
$array = [
[["value" => 1100], ["value" => 1000], ["value" => 3000]],
[["value" => 1200], ["value" => 2000], ["value" => 2000]],
[["value" => 1300], ["value" => 4000], ["value" => 1000]],
];
$arr = array_sum(array_column( array_column($array,0), 1));
print_r($arr);