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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。

  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:

  //

  // <a href="http://de.wikipedia.org/wiki/Whois">http://de.wikipedia.org/wiki/Whois</a>

  //

  $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;

  }

  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。

  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 )

  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。

  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

  */

  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昆明国防医院。

  <?php // display source code $lines = file(‘http://google.com/‘); foreach ($lines as $line_num => $line) {

  // loop thru each line and prepend line numbers

  echo "Line #{$line_num} : " . htmlspecialchars($line) . "

  \n";

  }

  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。

  function data_uri($file, $mime) {

  $contents=file_get_contents($file);

  $base64=base64_encode($contents);

  echo "data:$mime;base64,$base64";

  }

  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。

  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; } }

  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。

  function get_client_language($availableLanguages, $default=‘en‘){

  if (isset($_SERVER[‘HTTP_ACCEPT_LANGUAGE‘])) {

  $langs=explode(‘,‘,$_SERVER[‘HTTP_ACCEPT_LANGUAGE‘]);

  foreach ($langs as $value){

  $choice=substr($value,0,2);

  if(in_array($choice, $availableLanguages)){

  return $choice;

  }

  }

  }

  return $default;

  }

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

  if ($_SERVER[‘HTTPS‘] != "on") {

  echo "This is not HTTPS";

  }else{

  echo "This is HTTPS";

  }

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

  function generateCsv($data, $delimiter = ‘,‘, $enclosure = ‘"‘) {

  $handle = fopen(‘php://temp‘, ‘r+‘);

  foreach ($data as $line) {

  fputcsv($handle, $line, $delimiter, $enclosure);

  }

  rewind($handle);

  while (!feof($handle)) {

  $contents .= fread($handle, 8192);

  }

  fclose($handle);

  return $contents;

  }