每位程序员和开发者都喜欢讨论他们最爱的代码片段，尤其是当PHP开发者花费数个小时为网页编码或创建应用时，他们更知道这些代码的重要性。为了节约编码时间，笔者收集了一些较为实用的代码片段，帮助开发者提高工作效率。>>>
1) Whois query using PHP ——利用PHP获取Whois请求
利用这段代码，在特定的域名里可获得whois信息。把域名名称作为参数，并显示所有域名的相关信息。
代码如下 function whois_query($domain) {
// fix the domain name:
$domain = strtolower(trim($domain));
$domain = preg_replace("/^http:///i", "", $domain);
$domain = preg_replace("/^www./i", "", $domain);
$domain = explode("/", $domain);
$domain = trim($domain[0]);
// split the TLD from domain name
$_domain = explode(".", $domain);
$lst = count($_domain)-1;
$ext = $_domain[$lst];
// You find resources and lists
// like these on wikipedia:
//
// http://de.wikipedia.org/wiki/Whois
//
$servers = array(
"biz" => "whois.neulevel.biz",
"com" => "whois.internic.net",
"us" => "whois.nic.us",
"coop" => "whois.nic.coop",
"info" => "whois.nic.info",
"name" => "whois.nic.name",
"net" => "whois.internic.net",
"gov" => "whois.nic.gov",
"edu" => "whois.internic.net",
"mil" => "rs.internic.net",
"int" => "whois.iana.org",
"ac" => "whois.nic.ac",
"ae" => "whois.uaenic.ae",
"at" => "whois.ripe.net",
"au" => "whois.aunic.net",
"be" => "whois.dns.be",
"bg" => "whois.ripe.net",
"br" => "whois.registro.br",
"bz" => "whois.belizenic.bz",
"ca" => "whois.cira.ca",
"cc" => "whois.nic.cc",
"ch" => "whois.nic.ch",
"cl" => "whois.nic.cl",
"cn" => "whois.cnnic.net.cn",
"cz" => "whois.nic.cz",
"de" => "whois.nic.de",
"fr" => "whois.nic.fr",
"hu" => "whois.nic.hu",
"ie" => "whois.domainregistry.ie",
"il" => "whois.isoc.org.il",
"in" => "whois.ncst.ernet.in",
"ir" => "whois.nic.ir",
"mc" => "whois.ripe.net",
"to" => "whois.tonic.to",
"tv" => "whois.tv",
"ru" => "whois.ripn.net",
"org" => "whois.pir.org",
"aero" => "whois.information.aero",
"nl" => "whois.domain-registry.nl"
);
if (!isset($servers[$ext])){
die("Error: No matching nic server found!");
}
$nic_server = $servers[$ext];
$output = "";
// connect to whois server:
if ($conn = fsockopen ($nic_server, 43)) {
fputs($conn, $domain."rn");
while(!feof($conn)) {
$output .= fgets($conn,128);
}
fclose($conn);
}
else { die("Error: Could not connect to " . $nic_server . "!"); }
return $output;
}
2) Text messaging with PHP using the TextMagic API ——使用TextMagic API 获取PHP Test信息
TextMagic引入强大的核心API，可轻松将SMS发送到手机。该API是需要付费。
代码如下 the TextMagic PHP librequire("textmagic-sms-api-php/TextMagicAPI.php");
// Set the username and password information
$username = "myusername";
$password = "mypassword";
// Create a new instance of TM
$router = new TextMagicAPI(array(
"username" => $username,
"password" => $password
));
// Send a text message to "999-123-4567"
$result = $router->send("Wake up!", array(9991234567), true);
// result: Result is: Array ( [messages] => Array ( [19896128] => 9991234567 ) [sent_text] => Wake up! [parts_count] => 1 )
3) Get info about your memory usage——获取内存使用率
这段代码帮助你获取内存使用率。
代码如下 echo "Initial: ".memory_get_usage()." bytes n";/* prints
Initial: 361400 bytes
*/
// let"s use up some memory
for ($i = 0; $i < 100000; $i++) {
$array []= md5($i);
}
// let"s remove half of the array
for ($i = 0; $i < 100000; $i++) {
unset($array[$i]);
}
echo "Final: ".memory_get_usage()." bytes n";
/* prints
Final: 885912 bytes
*/
echo "Peak: ".memory_get_peak_usage()." bytes n";
/* prints
Peak: 13687072 bytes
*/
4) Display source code of any webpage——查看任意网页源代码
如果你想查看网页源代码，那么只需更改第二行的URL，源代码就会在网页上显示出。
代码如下 $line) {
// loop thru each line and prepend line numbers
echo "Line #{$line_num} : " . htmlspecialchars($line) . "
n";
}
5) Create data uri’s——创建数据uri
通过使用此代码，你可以创建数据Uri，这对在HTML/CSS中嵌入图片非常有用，可帮助节省HTTP请求。
代码如下 function data_uri($file, $mime) {
$contents=file_get_contents($file);
$base64=base64_encode($contents);
echo "data:$mime;base64,$base64";
}
6) Detect location by IP——通过IP检索出地理位置
这段代码帮助你查找特定的IP，只需在功能参数上输入IP，就可检测出位置。
代码如下 function detect_city($ip) {
$default = "UNKNOWN";
if (!is_string($ip) || strlen($ip) < 1 || $ip == "127.0.0.1" || $ip == "localhost") $ip = "8.8.8.8"; $curlopt_useragent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 (.NET CLR 3.5.30729)"; $url = "http://ipinfodb.com/ip_locator.php?ip=" . urlencode($ip); $ch = curl_init(); $curl_opt = array( CURLOPT_FOLLOWLOCATION => 1,
CURLOPT_HEADER => 0,
CURLOPT_RETURNTRANSFER => 1,
CURLOPT_USERAGENT => $curlopt_useragent,
CURLOPT_URL => $url,
CURLOPT_TIMEOUT => 1,
CURLOPT_REFERER => "http://" . $_SERVER["HTTP_HOST"],
);
curl_setopt_array($ch, $curl_opt);
$content = curl_exec($ch);
if (!is_null($curl_info)) {
$curl_info = curl_getinfo($ch);
}
curl_close($ch);
if ( preg_match("{
City : ([^<]*)
}i’, $content, $regs) ) { $city = $regs[1]; } if ( preg_match(‘{
State/Province : ([^<]*)
}i’, $content, $regs) ) { $state = $regs[1]; } if( $city!=” && $state!=” ){ $location = $city . ‘, ‘ . $state; return $location; }else{ return $default; } }
7) Detect browser language——查看浏览器语言
检测浏览器使用的代码脚本语言。
代码如下 function get_client_language($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 $default;
}
8) Check if server is HTTPS——检测服务器是否是HTTPS
代码如下 if ($_SERVER["HTTPS"] != "on") {
echo "This is not HTTPS";
}else{
echo "This is HTTPS";
}
9) Generate CSV file from a PHP array——在PHP数组中生成.csv 文件
代码如下 function generateCsv($data, $delimiter = ",", $enclosure = """) {
$handle = fopen("php://temp", "r+");
foreach ($data as $line) {
fputcsv($handle, $line, $delimiter, $enclosure);
}
rewind($handle);
while (!feof($handle)) {
$contents .= fread($handle, 8192);
}
fclose($handle);
return $contents;
}
一、查看邮件是否已被阅读
当你在发送邮件时，你或许很想知道该邮件是否被对方已阅读。这里有段非常有趣的代码片段能够显示对方IP地址记录阅读的实际日期和时间。
代码如下 复制代码error_reporting(0);
Header("Content-Type: image/jpeg");
//Get IP
if (!empty($_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);
?>
二、从网页中提取关键字
一段伟大的代码片段能够轻松的从网页中提取关键字。
代码如下 复制代码$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( $keywords );
三、查找页面上的所有链接
使用DOM，你可以轻松从任何页面上抓取链接，代码示例如下：
代码如下 复制代码$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 $url.\"
\";
}
四、自动转换URL，跳转至超链接
在WordPress中，如果你想自动转换URL，跳转至超链接页面，你可以利用内置的函数make_clickable()执行此操作。如果你想基于WordPress之外操作该程序，那么你可以参考wp-includes/formatting.php源代码。
代码如下 复制代码 function _make_url_clickable_cb($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 $ret;
}
五、创建数据URL
数据URL可以直接嵌入到HTML/CSS/JS中，以节省大量的 HTTP请求。 下面的这段代码可利用$file轻松创建数据URL。
代码如下 复制代码 function data_uri($file, $mime) {
$contents=file_get_contents($file);
$base64=base64_encode($contents);
echo "data:$mime;base64,$base64";
}
六、从服务器上下载&保存一个远程图片
当你在搭建网站时，从远程服务器下载某张图片并且将其保存在自己的服务器上，这一操作会经常用到。代码如下：
代码如下 复制代码$image = file_get_contents(\"http://www.php100.com/image.jpg\");
file_put_contents(\"/images/image.jpg\", $image);//Where to save the image
七、移除Remove Microsoft Word HTML Tag
当你使用Microsoft Word会创建许多Tag，比如font，span，style，class等。这些标签对于Word本身而言是非常有用的，但是当你从Word粘贴至网页时，你会发现很多无用的Tag。因此，下面的这段代码可帮助你删除所有无用的Word HTML Tag。
代码如下 复制代码 function cleanHTML($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 $html
}
八、检测浏览器语言
如果你的网站上有多种语言，那么可以使用这段代码作为默认的语言来检测浏览器语言。该段代码将返回浏览器客户端使用的初始语言。
代码如下 复制代码 function get_client_language($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 $default;
}
九、显示Facebook 粉丝数量
如果你的网站或者博客上有内链的Facebook页面，你或许想知道拥有多少粉丝。这段代码将帮助你查看Facebook粉丝数，记住，别忘了在你的页面ID第二行添加该段代码。
代码如下 复制代码$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;
?>
http://m.bbyears.com/jiaocheng/65608.html
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