超實用的php程式碼片段

每位程式員和開發人員都喜歡討論他們最愛的程式碼片段，尤其是當PHP開發人員花費數個小時為網頁編碼或建立應用時，他們更知道這些代碼的重要性。為了節約編碼時間，筆者收集了一些較為實用的程式碼片段，協助開發人員提高工作效率。

　1) Whois query using PHP ——利用PHP擷取Whois請求

　　利用這段代碼，在特定的網域名稱裡可獲得whois資訊。把網域名稱名稱作為參數，並顯示所有網域名稱的相關資訊。

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 擷取PHP Test資訊

　　TextMagic引入強大的核心API，可輕鬆將SMS發送到手機。該API是需要付費。

the TextMagic PHP librequire('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——擷取記憶體使用量率

　　這段代碼協助你擷取記憶體使用量率。

echo "Initial: ".memory_get_usage()." bytes \n";/* printsInitial: 361400 bytes*/ // let's use up some memoryfor ($i = 0; $i < 100000; $i++) {    $array []= md5($i);} // let's remove half of the arrayfor ($i = 0; $i < 100000; $i++) {    unset($array[$i]);} echo "Final: ".memory_get_usage()." bytes \n";/* printsFinal: 885912 bytes*/ echo "Peak: ".memory_get_peak_usage()." bytes \n";/* printsPeak: 13687072 bytes*/

　4) Display source code of any webpage——查看任意網頁原始碼

　　如果你想查看網頁原始碼，那麼只需更改第二行的URL，原始碼就會在網頁上顯示出。

<?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——建立資料uri

通過使用此代碼，你可以建立資料Uri，這對在HTML/CSS中內嵌圖片非常有用，可協助節省HTTP請求。

function data_uri($file, $mime) {  $contents=file_get_contents($file);  $base64=base64_encode($contents);  echo "data:$mime;base64,$base64";}

6) Detect location by IP——通過IP檢索出地理位置

　　這段代碼協助你尋找特定的IP，只需在功能參數上輸入IP，就可檢測出位置。

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——查看瀏覽器語言

　　檢測瀏覽器使用的代碼指令碼語言。

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——檢測伺服器是否是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數組中產生.csv 檔案

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;}

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