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分享几个非常有用的PHP代码片段

2012-01-31 14:20 696 查看
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;
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