十个超级有用的PHP代码片段

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)';
• $url = '' . urlencode($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

• $lines = file('');
• foreach ($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Faceboo**丝数量

• function fb_fan_count($facebook_name){
• // Example:
• $data = json_decode(file_get_contents("".$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:
• //
• //
• //
• $servers = array(
• "biz" => "whois.neulevel.biz",
• "com" => "whois.internic.net",
• "us" => "whois.nic.us",
• "coop" => "whois.nic.coop",
• "info" => "whois.nic.info",
• "name" => "whois.nic.name",
• "net" => "whois.internic.net",
• "gov" => "whois.nic.gov",
• "edu" => "whois.internic.net",
• "mil" => "rs.internic.net",
• "int" => "whois.iana.org",
• "ac" => "whois.nic.ac",
• "ae" => "whois.uaenic.ae",
• "at" => "whois.ripe.net",
• "au" => "whois.aunic.net",
• "be" => "whois.dns.be",
• "bg" => "whois.ripe.net",
• "br" => "whois.registro.br",
• "bz" => "whois.belizenic.bz",
• "ca" => "whois.cira.ca",
• "cc" => "whois.nic.cc",
• "ch" => "whois.nic.ch",
• "cl" => "whois.nic.cl",
• "cn" => "whois.cnnic.net.cn",
• "cz" => "whois.nic.cz",
• "de" => "whois.nic.de",
• "fr" => "whois.nic.fr",
• "hu" => "whois.nic.hu",
• "ie" => "whois.domainregistry.ie",
• "il" => "whois.isoc.org.il",
• "in" => "whois.ncst.ernet.in",
• "ir" => "whois.nic.ir",
• "mc" => "whois.ripe.net",
• "to" => "whois.tonic.to",
• "tv" => "whois.tv",
• "ru" => "whois.ripn.net",
• "org" => "whois.pir.org",
• "aero" => "whois.information.aero",
• "nl" => "whois.domain-registry.nl"
• );
• if (!isset($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, '[e-mail]', $headers);
• // Make sure that you decide how to respond to errors (on the user's side)
• // Either echo an error message, or kill the entire project. Up to you...
• // The code below ensures that we only "die" if the error was more than
• // just a NOTICE.
• if ( ($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;