Dominique Fournier
96cf1c4010
git-svn-id: https://svn.fournier38.fr/svn/ProgSVN/trunk@1207 bf3deb0d-5f1a-0410-827f-c0cc1f45334c
56 lines
1.8 KiB
PHP
56 lines
1.8 KiB
PHP
<?php
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class http
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{
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/** Choose the best choice from user choices.
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Can be used for languages (HTTP_ACCEPT_LANGUAGE), type of pages
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(HTTP_ACCEPT)...
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Ex. fr, en-gb;q=0.8, en;q=0.7
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Ex. text/html,application/xhtml+xml,application/xml;q=0.9,* /*;q=0.8
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If available is empty, then return the best priority defined by user,
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and throw an exception if nothing is provided for by the user.
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If nothing match, return $default
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*/
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function bestChoice ($uservar, $available=array(), $default=FALSE)
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{
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$uservar = str_replace (" ", "", $uservar);
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$userchoices = explode (",", $uservar);
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if (!isset ($userchoices[0]))
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{
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if ($default === FALSE)
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throw new Exception ("No user choice provided to bestChoice", 500);
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return $default;
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}
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// Remove weights (provided by the order of the user)
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// TODO : Reorganise the order if the weights are not in the right order
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foreach ($userchoices as $key=>$val)
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{
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$vals = @explode (";q", $val);
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$userchoices[$key] = $vals[0];
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}
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if (count ($available) === 0)
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return $userchoices[0];
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// Look at the best existing solution
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foreach ($userchoices as $choice)
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{
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foreach ($available as $avail)
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{
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if (strtolower ($avail) === strtolower ($choice))
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return $avail;
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// Case en_US
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$availTmp = str_replace ("_", "-", $avail);
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if (strtolower ($availTmp) === strtolower ($choice))
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return $avail;
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// Case text/xml, application/csv (just compare xml or csv)
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$mimes = explode ("/", $choice);
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if (isset ($mimes[1]) && strtolower ($availTmp) === $mimes[1])
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return $avail;
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}
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}
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// No best solution found. Use the default available solution
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return $default;
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}
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}
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