49 lines
1.4 KiB
PHP
49 lines
1.4 KiB
PHP
<?php
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date_default_timezone_set('Europe/Vienna');
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function get_fmt(): string {
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$fmt = _get_fmt();
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if ($fmt === 'ascii') {
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header('Status: 303');
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header('Location: ?format=text');
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exit();
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} else if ($fmt !== 'json' && $fmt !== 'html' && $fmt !== 'text') {
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header('Status: 300');
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header('Content-Type: text/html; charset=UTF-8');
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echo "<!DOCTYPE html><html><head></head><body>\n<a href='?format=html'>HTML</a><br/>\n<a href='?format=json'>JSON</a><br/>\n<a href='?format=text'>Text</a>\n</body></html>\n";
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exit();
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}
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return $fmt;
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}
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function _get_fmt(): string {
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if (!empty($_GET['format'])) return $_GET['format'];
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$fmts = [];
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foreach (explode(',', $_SERVER['HTTP_ACCEPT']) as $acc) {
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$acc = explode(';', trim($acc));
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$q = 1;
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if (sizeof($acc) > 1) {
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$qv = trim($acc[1]);
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if (str_starts_with($qv, 'q=')) {
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$q = (double)substr($qv, 2);
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}
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}
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$fmts[trim($acc[0])] = $q;
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}
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arsort($fmts, SORT_NUMERIC);
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array_filter($fmts, function($k) {
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return str_contains($k, '/json') || $k === 'text/html' || $k === 'text/plain' || str_contains($k, 'text/*');
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});
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$type = sizeof($fmts) > 0 ? array_key_first($fmts) : null;
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if (str_contains($type, '/json')) {
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return 'json';
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} else if ($type === 'text/html') {
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return 'html';
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} else {
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return 'text';
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}
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}
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