直接拿来用 九个超实用的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）

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, $domain.'rn');while(!feof($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 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——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';/* 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。

<?php // display source code $lines = file(’http://google.com/’); foreach ($lines as $line_num => $line) { // loop thru each line and prepend line numbersecho 'Line #{$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;}

英文出自：Designzum