分享几个非常有用的PHP代码片段

　　1. 发送短信

　　调用 TextMagic++ API。

　　// Include the TextMagic PHP lib

　　require(&＃39;textmagic-sms-api-php/TextMagicAPI.php&＃39;);

　　// Set the username and password information

　　$username = &＃39;myusername&＃39;;

　　$password = &＃39;mypassword&＃39;;

　　// Create a new instance of TM

　　$router = new TextMagicAPI(array(

　　&＃39;username&＃39; => $username,

　　&＃39;password&＃39; => $password

　　));

　　// Send a text message to &＃39;999-123-4567&＃39;

　　$result = $router->send(&＃39;Wake up!&＃39;, array(9991234567), true);

　　// result: Result is: Array ( [messages] => Array ( [19896128] => 9991234567 ) [sent_text] => Wake up! [parts_count] => 1 )

 

　　2. 根据IP查找地址

　　function detect_city($ip) {

　　$default = &＃39;UNKNOWN&＃39;;

　　if (!is_string($ip) || strlen($ip) <1 || $ip == &＃39;127.0.0.1&＃39; || $ip == &＃39;localhost&＃39;)

　　$ip = &＃39;8.8.8.8&＃39;;

　　$curlopt_useragent = &＃39;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)&＃39;;

　　$url = &＃39;http://ipinfodb.com/ip_locator.php?ip=&＃39; . urlencode($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 => &＃39;http://&＃39; . $_SERVER[&＃39;HTTP_HOST&＃39;],

　　);

　　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(&＃39;{

　　City : ([^<]*)

　　}i&＃39;, $content, $regs) ) {

　　$city = $regs[1];

　　}

　　if ( preg_match(&＃39;{

　　State/Province : ([^<]*)

　　}i&＃39;, $content, $regs) ) {

　　$state = $regs[1];

　　}

　　if( $city!=&＃39;&＃39; && $state!=&＃39;&＃39; ){

　　$location = $city . &＃39;, &＃39; . $state;

　　return $location;

　　}else{

　　return $default;

　　}

　　}

 

　　3. 显示网页的源代码

　　$lines = file(&＃39;http://google.com/&＃39;);

　　foreach ($lines as $line_num => $line) {

　　// loop thru each line and prepend line numbers

　　echo "Line #{$line_num} : " . htmlspecialchars($line) . "
\n";

　　}

　　4. 检查服务器是否使用HTTPS

　　if ($_SERVER[&＃39;HTTPS&＃39;] != "on") {

　　echo "This is not HTTPS";

　　}else{

　　echo "This is HTTPS";

　　}

 

　　5. 显示Facebook粉丝数量

　　function fb_fan_count($facebook_name){

　　// Example: https://graph.facebook.com/digimantra

　　$data = json_decode(file_get_contents("https://graph.facebook.com/".$facebook_name));

　　echo $data->likes;

　　}

　　6. 检测图片的主要颜色

　　$i = imagecreatefromjpeg("image.jpg");

　　for ($x=0;$x

　　for ($y=0;$y

　　$rgb = imagecolorat($i,$x,$y);

　　$r = ($rgb >> 16) & 0xFF;

　　$g = ($rgb >> & 0xFF;

　　$b = $rgb & 0xFF;

　　$rTotal += $r;

　　$gTotal += $g;

　　$bTotal += $b;

　　$total++;

　　}

　　}

　　$rAverage = round($rTotal/$total);

　　$gAverage = round($gTotal/$total);

　　$bAverage = round($bTotal/$total);

 

　　7. 获取内存使用信息

　　echo "Initial: ".memory_get_usage()." bytes \n";

　　/* prints

　　Initial: 361400 bytes

　　*/

　　// let&＃39;s use up some memory

　　for ($i = 0; $i <100000; $i++) {

　　$array []= md5($i);

　　}

　　// let&＃39;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

　　*/

 

　　8. 使用 gzcompress() 压缩数据

　　$string =

　　"Lorem ipsum dolor sit amet, consectetur

　　adipiscing elit. Nunc ut elit id mi ultricies

　　adipiscing. Nulla facilisi. Praesent pulvinar,

　　sapien vel feugiat vestibulum, nulla dui pretium orci,

　　non ultricies elit lacus quis ante. Lorem ipsum dolor

　　sit amet, consectetur adipiscing elit. Aliquam

　　pretium ullamcorper urna quis iaculis. Etiam ac massa

　　sed turpis tempor luctus. Curabitur sed nibh eu elit

　　mollis congue. Praesent ipsum diam, consectetur vitae

　　ornare a, aliquam a nunc. In id magna pellentesque

　　tellus posuere adipiscing. Sed non mi metus, at lacinia

　　augue. Sed magna nisi, ornare in mollis in, mollis

　　sed nunc. Etiam at justo in leo congue mollis.

　　Nullam in neque eget metus hendrerit scelerisque

　　eu non enim. Ut malesuada lacus eu nulla bibendum

　　id euismod urna sodales. ";

　　$compressed = gzcompress($string);

　　echo "Original size: ". strlen($string)."\n";

　　/* prints

　　Original size: 800

　　*/

　　echo "Compressed size: ". strlen($compressed)."\n";

　　/* prints

　　Compressed size: 418

　　*/

　　// getting it back

　　$original = gzuncompress($compressed);

 

　　9. 使用PHP做Whois检查

　　function whois_query($domain) {

　　// fix the domain name:

　　$domain = strtolower(trim($domain));

　　$domain = preg_replace(&＃39;/^http:\/\//i&＃39;, &＃39;&＃39;, $domain);

　　$domain = preg_replace(&＃39;/^www\./i&＃39;, &＃39;&＃39;, $domain);

　　$domain = explode(&＃39;/&＃39;, $domain);

　　$domain = trim($domain[0]);

　　// split the TLD from domain name

　　$_domain = explode(&＃39;.&＃39;, $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(&＃39;Error: No matching nic server found!&＃39;);

　　}

　　$nic_server = $servers[$ext];

　　$output = &＃39;&＃39;;

　　// connect to whois server:

　　if ($cOnn= fsockopen ($nic_server, 43)) {

　　fputs($conn, $domain."\r\n");

　　while(!feof($conn)) {

　　$output .= fgets($conn,128);

　　}

　　fclose($conn);

　　}

　　else { die(&＃39;Error: Could not connect to &＃39; . $nic_server . &＃39;!&＃39;); }

　　return $output;

　　}

 

　　10. 通过Email发送PHP错误

　　// Our custom error handler

　　function nettuts_error_handler($number, $message, $file, $line, $vars){

　　$email = "

　　

An error ($number) occurred on line

　　$line and in the file: $file.

　　

$message

";

 

　　$email .= "

" . print_r($vars, 1) . "

";

 

　　$headers = &＃39;Content-type: text/html; charset=iso-8859-1&＃39; . "\r\n";

　　// Email the error to someone...

　　error_log($email, 1, &＃39;you@youremail.com&＃39;, $headers);

　　// Make sure that you decide how to respond to errors (on the user&＃39;s side)

　　// Either echo an error message, or kill the entire project. Up to you...

　　// The code below ensures that we only "die" if the error was more than

　　// just a NOTICE.

　　if ( ($number !== E_NOTICE) && ($number <2048) ) {

　　die("There was an error. Please try again later.");

　　}

　　}

　　// We should use our custom function to handle errors.

　　set_error_handler(&＃39;nettuts_error_handler&＃39;);

　　// Trigger an error... (var doesn&＃39;t exist)

　　echo $somevarthatdoesnotexist;