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Online Sandbox for SQL and PHP: Write, Run, Test, and Share SQL Queries and PHP Code
<?php
$arr = [
["quantity"=>0.036],
["quantity"=>0.037],
["quantity"=>0.040],
["quantity"=>0.048],
];
$a = array_sum(array_column($arr, 'quantity')) * 1000;
var_dump($a);
$a = floor($a);
var_dump( $a);