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https://github.com/php/web-php.git
synced 2026-03-23 23:02:13 +01:00
dd8d8bf863
This patch adds some missing newlines, trims some multiple redundant final newlines into a single one, and trims few redundant leading newlines. According to POSIX, a line is a sequence of zero or more non-'<newline>' characters plus a terminating '<newline>' character. [1] Files should normally have at least one final newline character. C89 [2] and later standards [3] mention a final newline: "A source file that is not empty shall end in a new-line character, which shall not be immediately preceded by a backslash character." Although it is not mandatory for all files to have a final newline fixed, a more consistent and homogeneous approach brings less of commit differences issues and a better development experience in certain text editors and IDEs. [1] http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap03.html#tag_03_206 [2] https://port70.net/~nsz/c/c89/c89-draft.html#2.1.1.2 [3] https://port70.net/~nsz/c/c99/n1256.html#5.1.1.2
95 lines
2.4 KiB
PHP
95 lines
2.4 KiB
PHP
<?php
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$refresh = isset($_GET['refresh']) ? true : false;
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// Be 100% sure the timezone is set
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if (ini_get('date.timezone') === '' && function_exists('date_default_timezone_set')) {
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date_default_timezone_set('UTC');
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}
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$now = $_SERVER['REQUEST_TIME'];
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if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
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$last = strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']);
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// Use the same logo for a day
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if (strtotime('+1 day', $last) > $now && !$refresh) {
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header('HTTP/1.1 304 Not Modified');
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exit;
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}
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}
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function imgheader($filename) {
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$ext = strtolower(pathinfo($filename, PATHINFO_EXTENSION));
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switch ($ext) {
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case 'gif':
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$hdr = 'image/gif';
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break;
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case 'png':
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$hdr = 'image/png';
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break;
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case 'jpg':
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case 'jpeg':
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$hdr = 'image/jpeg';
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break;
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case 'svg':
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$hdr = 'image/svg+xml';
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break;
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default:
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return false;
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}
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header("Content-Type: $hdr");
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}
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function get_accepted_encodings() {
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if (isset($_SERVER['HTTP_ACCEPT_ENCODING'])) {
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$encodings = explode(',', $_SERVER['HTTP_ACCEPT_ENCODING']);
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return array_map(function ($x) {
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return trim($x);
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}, $encodings);
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}
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return array();
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}
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function serve_compressed_if_available($logo) {
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$encodings = get_accepted_encodings();
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if (!empty($encodings)) {
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foreach ($encodings as $encoding) {
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if ($encoding === 'gzip') {
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$encoded_file = "$logo.gz";
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if (file_exists($encoded_file)) {
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header("Content-Encoding: $encoding");
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readfile($encoded_file);
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return;
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}
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}
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}
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}
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readfile($logo);
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}
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$logo = './logos/php-logo.svg';
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if (isset($_SERVER['QUERY_STRING'])) {
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switch ($_SERVER['QUERY_STRING']) {
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case 'QA':
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case 'qa':
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$logo = './logos/qa.jpg';
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break;
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}
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}
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// xmas season, december and the first week of January
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$day = date('z', $now) - date('L', $now);
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if ($day < 6 || 365 - $day < 32) {
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$logo = './logos/php-xmas-2013.png';
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}
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$future = strtotime('+1 day', $now);
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$tsstring = gmdate('D, d M Y H:i:s ', $now) . 'GMT';
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header('Last-Modified: ' . $tsstring);
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header('Expires: ' . date(DATE_RSS, $future));
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imgheader($logo);
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serve_compressed_if_available($logo);
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