$meta = get_meta_tags('http://www.emoticode.net/'); $keywords = $meta['keywords']; // Split keywords $keywords = explode(',', $keywords ); // Trim them $keywords = array_map( 'trim', $keywords ); // Remove empty values $keywords = array_filter( $keywords ); print_r( $keywords );
使用DOM,你能夠在任意頁面上抓取連接,示例以下。
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$dom = new DOMDocument();
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@$dom->loadHTML($html);
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// grab all the on the page
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$xpath = new DOMXPath($dom);
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$hrefs = $xpath->evaluate("/html/body//a");
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for ($i = 0; $i < $hrefs->length; $i++) {
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$href = $hrefs->item($i);
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$url = $href->getAttribute('href');
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}
數據URI能夠幫助將圖像嵌入到HTML/CSS/JS中,從而節省HTTP請求。下面的函數能夠利用$file建立數據URI。
function data_uri($file, $mime) {
$contents=file_get_contents($file); $base64=base64_encode($contents); echo "data:$mime;base64,$base64"; }
當你在搭建網站時,極可能會從遠程服務器上下載圖片保存到你本身的服務器上,下面的代碼就能夠幫助你實現這個功能。
$image = file_get_contents('http://www.php100.com/image.jpg'); file_put_contents('/images/image.jpg', $image); //Where to save the image
當你使用Microsoft Word時,會建立不少標籤tag,好比font、span、style、class等,這些標籤在Word中十分有用,但當你從Word中把文本粘貼到網頁上,就會出現不少沒用的標籤。下面實用的函數能夠幫助你清除全部的Word HTML標籤。
function cleanHTML($html) {
/// /// Removes all FONT and SPAN tags, and all Class and Style attributes. /// Designed to get rid of non-standard Microsoft Word HTML tags. /// // start by completely removing all unwanted tags $html = ereg_replace("<(/)?(font|span|del|ins)[^>]*>","",$html); // then run another pass over the html (twice), removing unwanted attributes $html = ereg_replace("<([^>]*)(class|lang|style|size|face)=("[^"]*"|'[^']*'|[^>]+)([^>]*)>","<\1>",$html); $html = ereg_replace("<([^>]*)(class|lang|style|size|face)=("[^"]*"|'[^']*'|[^>]+)([^>]*)>","<\1>",$html); return $html }
若是你的網站是多種語言的,下面的代碼能夠幫助你檢測瀏覽器語言,它會返回客戶端瀏覽器的默認語言。
function get_client_language($availableLanguages, $default='en'){ if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) { $langs=explode(',',$_SERVER['HTTP_ACCEPT_LANGUAGE']); foreach ($langs as $value){ $choice=substr($value,0,2); if(in_array($choice, $availableLanguages)){ return $choice; } } } return $default; }
file_put_contents('/tmp/all.log','mapping'.date("m-d H:i:s")."\n",FILE_APPEND);
//若是去獲取某個excel日期(格式爲:2016-03-12),那麼獲取到的是數字,須要通過轉換才能恢復 public function excelTime($date, $time = false) { if(function_exists('GregorianToJD')){ if (is_numeric( $date )) { $jd = GregorianToJD( 1, 1, 1970 ); $gregorian = JDToGregorian( $jd + intval ( $date ) - 25569 ); $date = explode( '/', $gregorian ); $date_str = str_pad( $date [2], 4, '0', STR_PAD_LEFT ) ."-". str_pad( $date [0], 2, '0', STR_PAD_LEFT ) ."-". str_pad( $date [1], 2, '0', STR_PAD_LEFT ) . ($time ? " 00:00:00" : ''); return $date_str; } }else{ // $date=$date>25568? $date+1:25569; /*There was a bug if Converting date before 1-1-1970 (tstamp 0)*/ $ofs=(70 * 365 + 17+2) * 86400; $date = date("Y-m-d",($date * 86400) - $ofs).($time ? " 00:00:00" : ''); return $date; } }
1 json轉換成數組 $json = '[{"id":"22","name":"33","descn":"44"}]'; //json格式的數組轉換成 php的數組 $arr = (Array)json_decode($json); echo $arr[0]->id; //用對象的方式訪問(這種是沒有轉換成數組,而是轉換成對象的狀況
2 數組轉換成json $json_arr = array('WebName'=>'11','WebSite'=>'11'); $php_json = json_encode($json_arr); //把php數組格式轉換成 json 格式的數據 echo $php_json;