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Online Sandbox for SQL and PHP: Write, Run, Test, and Share SQL Queries and PHP Code
<?php
$stocks = collect(
[
['sku' => '123', 'batch' => '123', 'qty_total' => 1],
['sku' => '1233', 'batch' => '123', 'qty_total' => 2],
['sku' => '123', 'batch' => '123', 'qty_total' => 3],
['sku' => '5', 'batch' => '123', 'qty_total' => 4],
]
);
var_export(
$stocks
->groupBy(['sku', 'batch'])
->toArray()
);