當你傳送郵件時,你肯定很想知道你的郵件是否已被對方檢視。下面的程式碼就能實現記錄閱讀你郵件的IP地址,還有實際的閱讀日期和時間。
error_reporting(0); Header("Content-Type: image/jpeg"); //Get IP if (!empty($_SERVER['HTTP_CLIENT_IP'])) { $ip=$_SERVER['HTTP_CLIENT_IP']; } elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) { $ip=$_SERVER['HTTP_X_FORWARDED_FOR']; } else { $ip=$_SERVER['REMOTE_ADDR']; } //Time $actual_time = time(); $actual_day = date('Y.m.d', $actual_time); $actual_day_chart = date('d/m/y', $actual_time); $actual_hour = date('H:i:s', $actual_time); //GET Browser $browser = $_SERVER['HTTP_USER_AGENT']; //LOG $myFile = "log.txt"; $fh = fopen($myFile, 'a+'); $stringData = $actual_day . ' ' . $actual_hour . ' ' . $ip . ' ' . $browser . ' ' . "\r\n"; fwrite($fh, $stringData); fclose($fh); //Generate Image (Es. dimesion is 1x1) $newimage = ImageCreate(1,1); $grigio = ImageColorAllocate($newimage,255,255,255); ImageJPEG($newimage); ImageDestroy($newimage); ?>
原始碼:http://www.emoticode.net/php/code-to-find-out-if-your-email-has-been-read.html
二.從網頁中提取關鍵詞
這段優秀的程式碼可以簡單地實現從網頁中提取關鍵詞的功能。
$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 );
原始碼:http://www.emoticode.net/php/extract-keywords-from-any-webpage.html
三.查詢頁面上的所有連結
使用DOM,你可以在任意頁面上抓取連結,示例如下。
$html = file_get_contents('http://www.php100.com'); $dom = new DOMDocument(); @$dom->loadHTML($html); // grab all the on the page $xpath = new DOMXPath($dom); $hrefs = $xpath->evaluate("/html/body//a"); for ($i = 0; $i < $hrefs->length; $i++) { $href = $hrefs->item($i); $url = $href->getAttribute('href'); echo $url.''; }原始碼:http://snipplr.com/view/70489/find-all-links-on-a-page/
四.自動轉換URL為可點選超連結
在Wordpress中,如果你想自動轉換所有的URLs為可點選超連結,你就可以使用內建函式make_clickable()實現。當你在WordPress外操作時,你可以參考wp-includes/formatting.php中的原始碼。
function _make_url_clickable_cb($matches) { $ret = ''; $url = $matches[2]; if ( empty($url) ) return $matches[0]; // removed trailing [.,;:] from URL if ( in_array(substr($url, -1), array('.', ',', ';', ':')) === true ) { $ret = substr($url, -1); $url = substr($url, 0, strlen($url)-1); } return $matches[1] . "$url" . $ret; } function _make_web_ftp_clickable_cb($matches) { $ret = ''; $dest = $matches[2]; $dest = 'http://' . $dest; if ( empty($dest) ) return $matches[0]; // removed trailing [,;:] from URL if ( in_array(substr($dest, -1), array('.', ',', ';', ':')) === true ) { $ret = substr($dest, -1); $dest = substr($dest, 0, strlen($dest)-1); } return $matches[1] . "$dest" . $ret; } function _make_email_clickable_cb($matches) { $email = $matches[2] . '@' . $matches[3]; return $matches[1] . "$email"; } function make_clickable($ret) { $ret = ' ' . $ret; // in testing, using arrays here was found to be faster $ret = preg_replace_callback('#([\s>])([\w]+?://[\w\\x80-\\xff\#$%&~/.\-;:=,?@\[\]+]*) #is', '_make_url_clickable_cb', $ret); $ret = preg_replace_callback('#([\s>])((www|ftp)\.[\w\\x80-\\xff\#$%&~/.\-;:=,?@\[\]+]*)#is', '_make_web_ftp_clickable_cb', $ret); $ret = preg_replace_callback('#([\s>])([.0-9a-z_+-]+)@(([0-9a-z-]+\.)+[0-9a-z]{2,})#i', '_make_email_clickable_cb', $ret); // this one is not in an array because we need it to run last, for cleanup of accidental links within links $ret = preg_replace("#(]+?>|>))]+?>([^>]+?)#i", "$1$3", $ret); $ret = trim($ret); return $ret; }
原始碼:http://zenverse.net/php-function-to-auto-convert-url-into-hyperlink/
五.建立資料URI
資料URI可以幫助將影像嵌入到HTML/CSS/JS中,從而節省HTTP請求。下面的函式可以利用$file建立資料URI。
function data_uri($file, $mime) { $contents=file_get_contents($file); $base64=base64_encode($contents); echo "data:$mime;base64,$base64"; }
原始碼:http://css-tricks.com/snippets/php/create-data-uris/
六.下載和儲存遠端圖片到你的伺服器
當你在搭建網站時,很可能會從遠端伺服器上下載圖片儲存到你自己的伺服器上,下面的程式碼就可以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', $image); //Where to save the image
原始碼:http://www.catswhocode.com/blog/snippets/download-save-a-remote-image-on-your-server-using-php
七.移除Microsoft Word HTML標籤
當你使用Microsoft Word時,會建立很多標籤tag,比如font、span、style、class等,這些標籤在Word中十分有用,但當你從Word中把文字貼上到網頁上,就會出現很多沒用的標籤。下面實用的函式可以幫助你清除所有的Word HTML標籤。
function cleanHTML($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 $html }
原始碼:http://tim.mackey.ie/CommentView,guid,2ece42de-a334-4fd0-8f94-53c6602d5718.aspx
八.檢測瀏覽器語言
如果你的網站是多種語言的,下面的程式碼可以幫助你檢測瀏覽器語言,它會返回客戶端瀏覽器的預設語言。
function get_client_language($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; }
原始碼:http://snipplr.com/view/12631/detect-browser-language/
九.顯示Facebook上的粉絲數量
如果在你的網站或部落格中,鏈有Facebook頁面,你可能希望顯示Facebook上的粉絲數量,下面的程式碼就可以幫助你獲取粉絲數量,另外不要忘記在程式碼第二行新增你的頁面ID。
$page_id = "YOUR PAGE-ID"; $xml = @simplexml_load_file("http://api.facebook.com/restserver.php? method=facebook.fql.query&query=SELECT%20fan_count%20FROM%20page%20WHERE% 20page_id=".$page_id."") or die ("a lot"); $fans = $xml->page->fan_count; echo $fans; ?>
原始碼:http://www.wprecipes.com/display-number-of-facebook-fans-in-full-text-on-your-wordpress-blog
原文:http://www.catswhocode.com/blog/useful-snippets-for-php-developers
(翻譯:PHP100_Zeroing)
來自:PHP100
評論(2)