note 75049 added to function.array-product

From: Date: Thu, 10 May 2007 04:18:26 +0000
Subject: note 75049 added to function.array-product
Groups: php.notes 
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Just in relation to "bishop" and the overall behaviour of array_product... The "empty product" (i.e. product of no values) is supposed to be defined as "1": http://en.wikipedia.org/wiki/Empty_product ...however PHP's array_product() returns int(0) if it is given an empty array. bishop's code does this, too (so it IS a compatible replacement). Ideally, array_product() should probably return int(1). I guess it depends on your specific context or rationale. You might normally presume int(0) to be a suitable return value if there are no inputs, but let's say that you're calculating a price based on "percentage" offsets: $price = 10.0; $discounts = get_array_of_customer_discounts(); $price = $price * array_product($discounts); ...if there are NO "discounts", the price will come out as 0, instead of 10.0 ---- Server IP: 203.220.0.234 Probable Submitter: 203.122.246.187 (proxied: 1.1 PROXY) ---- Manual Page -- http://www.php.net/manual/en/function.array-product.php Edit -- https://master.php.net/note/edit/75049 Del: integrated -- https://master.php.net/note/delete/75049/integrated Del: useless -- https://master.php.net/note/delete/75049/useless Del: bad code -- https://master.php.net/note/delete/75049/bad+code Del: spam -- https://master.php.net/note/delete/75049/spam Del: non-english -- https://master.php.net/note/delete/75049/non-english Del: in docs -- https://master.php.net/note/delete/75049/in+docs Del: other reasons-- https://master.php.net/note/delete/75049 Reject -- https://master.php.net/note/reject/75049 Search -- https://master.php.net/manage/user-notes.php

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