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<?php $products = [1, 2, 3, 4, 5]; $vendors = ["Amazon", "Newegg", "##php"]; $vendorProducts = []; foreach ($vendors as $vendor) { $vendorProducts[$vendor] = []; foreach ($products as $productID) { $vendorProducts[$vendor][] = $productID; } } var_dump($vendorProducts);
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { ["Amazon"]=> array(5) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(4) [4]=> int(5) } ["Newegg"]=> array(5) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(4) [4]=> int(5) } ["##php"]=> array(5) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(4) [4]=> int(5) } }

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