1. 发送短信

调用 TextMagic API。
- // Include the TextMagic PHP lib
 - require('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 )
 
2. 根据IP查找地址
- 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;
 - }
 - }
 
3. 显示网页的源代码
- $lines = file('http://google.com/');
 - foreach ($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['HTTPS'] != "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'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
 - */
 
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('/^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, $domain."\r\n");
 - while(!feof($conn)) {
 - $output .= fgets($conn,128);
 - }
 - fclose($conn);
 - }
 - else { die('Error: Could not connect to ' . $nic_server . '!'); }
 - 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) . "";- $headers = 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
 - // Email the error to someone...
 - error_log($email, 1, 'you@youremail.com', $headers);
 - // Make sure that you decide how to respond to errors (on the user's side)
 - // Either echo an error message, or kill the entire project. Up to you...
 - // The code below ensures that we only "die" if the error was more than
 - // just a NOTICE.
 - if ( ($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('nettuts_error_handler');
 - // Trigger an error... (var doesn't exist)
 - echo $somevarthatdoesnotexist;
 
原文:http://www.oschina.net/question/28_36708
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