推荐10个非常实用的PHP代码片段

// 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 ) 

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;          }  } 

 $line) {        // loop thru each line and prepend line numbers        echo "Line #{$line_num} : " . htmlspecialchars($line) . "
/n";    }   ?>

if ($_SERVER['HTTPS'] != "on") {        echo "This is not HTTPS";    }else{        echo "This is HTTPS";    }    

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;    }       

$i = imagecreatefromjpeg("image.jpg");        for ($x=0;$x> 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);    

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   */    

$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); 

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;    }  

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;?>