推荐10个非常实用的PHP代码片段_PHP教程

// 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('{<li>City : ([^<]*)</li>}i', $content, $regs) )  {  
            $city = $regs[1];  
        }  
        if ( preg_match('{<li>State/Province : ([^<]*)</li>}i', $content, $regs) )  {  
            $state = $regs[1];  
        }  
 
        if( $city!='' && $state!='' ){  
          $location = $city . ', ' . $state;  
          return $location;  
        }else{  
          return $default;  
        }  
} 

<?php // display source code    
$lines = file('http://google.com/');    
foreach ($lines as $line_num => $line) {    
    // loop thru each line and prepend line numbers    
    echo "Line #<b>{$line_num}</b> : " . htmlspecialchars($line) . "<br>\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<imagesx($i);$x++) {    
    for ($y=0;$y<imagesy($i);$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);    

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;    
}  

<?php    
    
// Our custom error handler    
function nettuts_error_handler($number, $message, $file, $line, $vars){    
    $email = "    
        <p>An error ($number) occurred on line    
        <strong>$line</strong> and in the <strong>file: $file.</strong>    
        <p> $message </p>
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                ";    
    
    $email .= "<pre class="code">" . print_r($vars, 1) . "