将获取的BING(必应)图链接进行缓存,减少服务器负担,提升访问速度。
<?php $filename = "./bing.json"; if (file_exists($filename) === false) { file_put_contents($filename, ""); } $handle = fopen($filename, "r"); $contents = fread($handle, filesize($filename)); fclose($handle); $contents = json_decode($contents, true); if (filesize($filename) === 0) { getBingImg(); } else { if ($contents['time'] === date("Ymd")) { Header("Location: " . $contents['url']); } else { getBingImg(); } } function getBingImg() { $str = json_decode(file_get_contents('https://cn.bing.com/HPImageArchive.aspx?format=js&idx=0&n=1')); if (isset($str->images[0])) { $impurely = 'https://cn.bing.com' . $str->images[0]->url; } else { $impurely = false; } if ($impurely) { global $contents; if ($contents['url'] !== $impurely) { global $filename; $data = array( "time" => date("Ymd"), "url" => $impurely ); $data = json_encode($data); file_put_contents($filename, $data); } Header("Location: " . $impurely); exit(); } else { exit('error'); } } ?>
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