直接拿来用，超实用的PHP代码片段（二）

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。>>> 点击查看PHP代码片段（一）

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。

1. function whois_query($domain) {
3. // fix the domain name:
4. $domain = strtolower(trim($domain));
5. $domain = preg_replace('/^http:\/\//i', '', $domain);
6. $domain = preg_replace('/^www\./i', '', $domain);
7. $domain = explode('/', $domain);
8. $domain = trim($domain[0]);
10. // split the TLD from domain name
11. $_domain = explode('.', $domain);
12. $lst = count($_domain)-1;
13. $ext = $_domain[$lst];
15. // You find resources and lists
16. // like these on wikipedia:
17. //
18. // http://de.wikipedia.org/wiki/Whois
19. //
20. $servers = array(
21. "biz" => "whois.neulevel.biz",
22. "com" => "whois.internic.net",
23. "us" => "whois.nic.us",
24. "coop" => "whois.nic.coop",
25. "info" => "whois.nic.info",
26. "name" => "whois.nic.name",
27. "net" => "whois.internic.net",
28. "gov" => "whois.nic.gov",
29. "edu" => "whois.internic.net",
30. "mil" => "rs.internic.net",
31. "int" => "whois.iana.org",
32. "ac" => "whois.nic.ac",
33. "ae" => "whois.uaenic.ae",
34. "at" => "whois.ripe.net",
35. "au" => "whois.aunic.net",
36. "be" => "whois.dns.be",
37. "bg" => "whois.ripe.net",
38. "br" => "whois.registro.br",
39. "bz" => "whois.belizenic.bz",
40. "ca" => "whois.cira.ca",
41. "cc" => "whois.nic.cc",
42. "ch" => "whois.nic.ch",
43. "cl" => "whois.nic.cl",
44. "cn" => "whois.cnnic.net.cn",
45. "cz" => "whois.nic.cz",
46. "de" => "whois.nic.de",
47. "fr" => "whois.nic.fr",
48. "hu" => "whois.nic.hu",
49. "ie" => "whois.domainregistry.ie",
50. "il" => "whois.isoc.org.il",
51. "in" => "whois.ncst.ernet.in",
52. "ir" => "whois.nic.ir",
53. "mc" => "whois.ripe.net",
54. "to" => "whois.tonic.to",
55. "tv" => "whois.tv",
56. "ru" => "whois.ripn.net",
57. "org" => "whois.pir.org",
58. "aero" => "whois.information.aero",
59. "nl" => "whois.domain-registry.nl"
60. );
62. if (!isset($servers[$ext])){
63. die('Error: No matching nic server found!');
64. }
66. $nic_server = $servers[$ext];
68. $output = '';
70. // connect to whois server:
71. if ($conn = fsockopen ($nic_server, 43)) {
72. fputs($conn, $domain."\r\n");
73. while(!feof($conn)) {
74. $output .= fgets($conn,128);
75. }
76. fclose($conn);
77. }
78. else { die('Error: Could not connect to ' . $nic_server . '!'); }
80. return $output;
81. }

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。

1. the TextMagic PHP lib
2. require('textmagic-sms-api-php/TextMagicAPI.php');
4. // Set the username and password information
5. $username = 'myusername';
6. $password = 'mypassword';
8. // Create a new instance of TM
9. $router = new TextMagicAPI(array(
10. 'username' => $username,
11. 'password' => $password
12. ));
14. // Send a text message to '999-123-4567'
15. $result = $router->send('Wake up!', array(9991234567), true);
17. // 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。

1. echo "Initial: ".memory_get_usage()." bytes \n";
2. /* prints
3. Initial: 361400 bytes
4. */
6. // let's use up some memory
7. for ($i = 0; $i
8. $array []= md5($i);
9. }
11. // let's remove half of the array
12. for ($i = 0; $i
13. unset($array[$i]);
14. }
16. echo "Final: ".memory_get_usage()." bytes \n";
17. /* prints
18. Final: 885912 bytes
19. */
21. echo "Peak: ".memory_get_peak_usage()." bytes \n";
22. /* prints
23. Peak: 13687072 bytes
24. */

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。

1. $line) {
2. // loop thru each line and prepend line numbers
3. echo "Line #{$line_num} : " . htmlspecialchars($line) . "
4. \n";
5. }

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。

1. function data_uri($file, $mime) {
2. $contents=file_get_contents($file);
3. $base64=base64_encode($contents);
4. echo "data:$mime;base64,$base64";
5. }

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。

1. function detect_city($ip) {
3. $default = 'UNKNOWN';
5. if (!is_string($ip) || strlen($ip) 1,
6. CURLOPT_HEADER => 0,
7. CURLOPT_RETURNTRANSFER => 1,
8. CURLOPT_USERAGENT => $curlopt_useragent,
9. CURLOPT_URL => $url,
10. CURLOPT_TIMEOUT => 1,
11. CURLOPT_REFERER => 'http://' . $_SERVER['HTTP_HOST'],
12. );
14. curl_setopt_array($ch, $curl_opt);
16. $content = curl_exec($ch);
18. if (!is_null($curl_info)) {
19. $curl_info = curl_getinfo($ch);
20. }
22. curl_close($ch);
24. if ( preg_match('{
25. City : ([^
26. }i’, $content, $regs) ) { $city = $regs[1]; } if ( preg_match(‘{
28. State/Province : ([^
30. }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。

1. function get_client_language($availableLanguages, $default='en'){
2. if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
3. $langs=explode(',',$_SERVER['HTTP_ACCEPT_LANGUAGE']);
5. foreach ($langs as $value){
6. $choice=substr($value,0,2);
7. if(in_array($choice, $availableLanguages)){
8. return $choice;
9. }
10. }
11. }
12. return $default;
13. }

8) Check if server is HTTPS——检测服务器是否是HTTPS

1. if ($_SERVER['HTTPS'] != "on") {
2. echo "This is not HTTPS";
3. }else{
4. echo "This is HTTPS";
5. }

9) Generate CSV file from a PHP array——在PHP数组中生成.csv 文件

1. function generateCsv($data, $delimiter = ',', $enclosure = '"') {
2. $handle = fopen('php://temp', 'r+');
3. foreach ($data as $line) {
4. fputcsv($handle, $line, $delimiter, $enclosure);
5. }
6. rewind($handle);
7. while (!feof($handle)) {
8. $contents .= fread($handle, 8192);
9. }
10. fclose($handle);
11. return $contents;
12. }

英文出自：Designzum