十个超级有用的PHP代码片段

1. 发送短信

调用 TextMagic API。

01	// Include the TextMagic PHP lib

02	require('textmagic-sms-api-php/TextMagicAPI.php');

03

04	// Set the username and password information

05	$username = 'myusername';

06	$password = 'mypassword';

07

08	// Create a new instance of TM

09	$router = new TextMagicAPI(array(

10	'username' => $username,

11	'password' => $password

12

));

13

14	// Send a text message to '999-123-4567'

15	$result = $router->send('Wake up!', array(9991234567), true);

16

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

2. 根据IP查找地址

01	function detect_city($ip) {

02

03	$default = 'UNKNOWN';

04

05	if (!is_string($ip) || strlen($ip) < 1 || $ip == '127.0.0.1' || $ip == 'localhost')

06	$ip = '8.8.8.8';

07

08	$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)';

09

10	$url = 'http://ipinfodb.com/ip_locator.php?ip=' . urlencode($ip);

11	$ch = curl_init();

12

13	$curl_opt = array(

14	CURLOPT_FOLLOWLOCATION  => 1,

15	CURLOPT_HEADER      => 0,

16	CURLOPT_RETURNTRANSFER  => 1,

17	CURLOPT_USERAGENT   => $curlopt_useragent,

18	CURLOPT_URL       => $url,

19	CURLOPT_TIMEOUT         => 1,

20	CURLOPT_REFERER         => 'http://' . $_SERVER['HTTP_HOST'],

21

);

22

23	curl_setopt_array($ch, $curl_opt);

24

25	$content = curl_exec($ch);

26

27	if (!is_null($curl_info)) {

28	$curl_info = curl_getinfo($ch);

29

}

30

31	curl_close($ch);

32

33	if ( preg_match('{<li>City : ([^<]*)</li>}i', $content, $regs) )  {

34	$city = $regs[1];

35

}

36	if ( preg_match('{<li>State/Province : ([^<]*)</li>}i', $content, $regs) )  {

37	$state = $regs[1];

38

}

39

40	if( $city!='' && $state!='' ){

41	$location = $city . ', ' . $state;

42	return $location;

43

}else{

44	return $default;

45

}

46

47

}

3. 显示网页的源代码

1	<?php // display source code

2	$lines = file('http://google.com/');

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

4	// loop thru each line and prepend line numbers

5	echo "Line #<b>{$line_num}</b> : " . htmlspecialchars($line) . "<br>\n";

6

}

4. 检查服务器是否使用HTTPS

1	if ($_SERVER['HTTPS'] != "on") {

2	echo "This is not HTTPS";

3

}else{

4	echo "This is HTTPS";

5

}

5. 显示Facebook粉丝数量

1	function fb_fan_count($facebook_name){

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

3	$data = json_decode(file_get_contents("https://graph.facebook.com/".$facebook_name));

4	echo $data->likes;

5

}

6. 检测图片的主要颜色

01	$i = imagecreatefromjpeg("image.jpg");

02

03	for ($x=0;$x<imagesx($i);$x++) {

04	for ($y=0;$y<imagesy($i);$y++) {

05	$rgb = imagecolorat($i,$x,$y);

06	$r   = ($rgb >> 16) & 0xFF;

07	$g   = ($rgb >>  & 0xFF;

08	$b   = $rgb & 0xFF;

09

10	$rTotal += $r;

11	$gTotal += $g;

12	$bTotal += $b;

13

$total++;

14

}

15

}

16

17	$rAverage = round($rTotal/$total);

18	$gAverage = round($gTotal/$total);

19	$bAverage = round($bTotal/$total);

7. 获取内存使用信息

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

02

/* prints

03	Initial: 361400 bytes

04

*/

05

06	// let's use up some memory

07	for ($i = 0; $i < 100000; $i++) {

08	$array []= md5($i);

09

}

10

11	// let's remove half of the array

12	for ($i = 0; $i < 100000; $i++) {

13	unset($array[$i]);

14

}

15

16	echo "Final: ".memory_get_usage()." bytes \n";

17

/* prints

18	Final: 885912 bytes

19

*/

20

21	echo "Peak: ".memory_get_peak_usage()." bytes \n";

22

/* prints

23	Peak: 13687072 bytes

24

*/

8. 使用 gzcompress() 压缩数据

01

$string =

02	"Lorem ipsum dolor sit amet, consectetur

03	adipiscing elit. Nunc ut elit id mi ultricies

04	adipiscing. Nulla facilisi. Praesent pulvinar,

05	sapien vel feugiat vestibulum, nulla dui pretium orci,

06	non ultricies elit lacus quis ante. Lorem ipsum dolor

07	sit amet, consectetur adipiscing elit. Aliquam

08	pretium ullamcorper urna quis iaculis. Etiam ac massa

09	sed turpis tempor luctus. Curabitur sed nibh eu elit

10	mollis congue. Praesent ipsum diam, consectetur vitae

11	ornare a, aliquam a nunc. In id magna pellentesque

12	tellus posuere adipiscing. Sed non mi metus, at lacinia

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

14	sed nunc. Etiam at justo in leo congue mollis.

15	Nullam in neque eget metus hendrerit scelerisque

16	eu non enim. Ut malesuada lacus eu nulla bibendum

17	id euismod urna sodales. ";

18

19	$compressed = gzcompress($string);

20

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

22

/* prints

23	Original size: 800

24

*/

25

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

27

/* prints

28	Compressed size: 418

29

*/

30

31	// getting it back

32	$original = gzuncompress($compressed);

9. 使用PHP做Whois检查

01	function whois_query($domain) {

02

03	// fix the domain name:

04	$domain = strtolower(trim($domain));

05	$domain = preg_replace('/^http:\/\//i', '', $domain);

06	$domain = preg_replace('/^www\./i', '', $domain);

07	$domain = explode('/', $domain);

08	$domain = trim($domain[0]);

09

10	// split the TLD from domain name

11	$_domain = explode('.', $domain);

12	$lst = count($_domain)-1;

13	$ext = $_domain[$lst];

14

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

);

61

62	if (!isset($servers[$ext])){

63	die('Error: No matching nic server found!');

64

}

65

66	$nic_server = $servers[$ext];

67

68	$output = '';

69

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 . '!'); }

79

80	return $output;

81

}

10. 通过Email发送PHP错误

01

<?php

02

03	// Our custom error handler

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

05	$email = "

06	<p>An error ($number) occurred on line

07	<strong>$line</strong> and in the <strong>file: $file.</strong>

08	<p> $message </p>";

09

10	$email .= "<pre>" . print_r($vars, 1) . "</pre>";

11

12	$headers = 'Content-type: text/html; charset=iso-8859-1' . "\r\n";

13

14	// Email the error to someone...

15	error_log($email, 1, 'you@youremail.com', $headers);

16

17	// Make sure that you decide how to respond to errors (on the user's side)

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

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

20	// just a NOTICE.

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

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

23

}

24

}

25

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

27	set_error_handler('nettuts_error_handler');

28

29	// Trigger an error... (var doesn't exist)

30	echo $somevarthatdoesnotexist;

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