Negotiation

The Negotiation is a module for handling Content Negotiation.

See Reference : RFC 7231

Get best match between need and offerings

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Note: You can use * as wildcards for matching a family of choices.

$need  = 'image/*;q=0.9,*/*;q=0.2';
$offer = 'text/html,svg/xml,image/svg+xml';
echo Negotiation::bestMatch($need,$offer);

image/svg+xml

Preferred and best match

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Negotiation class automatically orders by priority based on q parameter.

$negotiatior = new Negotiation('en-US;q=0.3,it,en;q=0.4,es;q=0.9,de');

You can obtain the preferred response via the preferred method.

echo $negotiatior->preferred();

it

Or get the best match against another RFC7231 query

echo $negotiatior->best('es,en-US');

es

false will be returned if no match can be found.