在开发 Web 或者移动应用的时候，经常会遇到需要发送 SMS 给用户，或者因为登录原因，或者是为了发送信息。下面的 PHP 代码就实现了发送 SMS 的功能。
为了使用任何的语言发送 SMS，需要一个 SMS gateway。大部分的 SMS 会提供一个 API，这里是使用 MSG91 作为 SMS gateway。
function send_sms($mobile,$msg)
{$authKey = "XXXXXXXXXXX";
date_default_timezone_set("Asia/Kolkata");$date = strftime("%Y-%m-%d %H:%M:%S");//Multiple mobiles numbers separated by comma$mobileNumber = $mobile;
//Sender ID,While using route4 sender id should be 6 characters long.$senderId = "IKOONK";
//Your message to send, Add URL encoding here.$message = urlencode($msg);
//Define route $route = "template";//Prepare you post parameters$postData = array( 'authkey' => $authKey,
'mobiles' => $mobileNumber,
'message' => $message,
'sender' => $senderId,
'route' => $route);
//API URL$url="https://control.msg91.com/sendhttp.php";
// init the resource$ch = curl_init();
curl_setopt_array($ch, array(
CURLOPT_URL => $url,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => $postData
//,CURLOPT_FOLLOWLOCATION => true));
//Ignore SSL certificate verificationcurl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
//get response$output = curl_exec($ch);//Print error if anyif(curl_errno($ch))
{ echo 'error:' . curl_error($ch);
}
curl_close($ch);
}其中“$authKey = "XXXXXXXXXXX";”需要你输入你的密码，“$senderId = "IKOONK";”需要你输入你的 SenderID。当输入移动号码的时候需要指定国家代码 (比如，美国是 1，印度是 91 )。
语法：
<?php$message = "Hello World";$mobile = "918112998787"; send_sms($mobile,$message);?>
2. 使用 mandrill 发送邮件
Mandrill 是一款强大的 SMTP 提供器。开发者倾向于使用一个第三方 SMTP provider 来获取更好的收件交付。
下面的函数中，你需要把 “Mandrill.php” 放在同一个文件夹，作为 PHP 文件，这样就可以使用TA来发送邮件。
function send_email($to_email,$subject,$message1)
{require_once 'Mandrill.php';$apikey = 'XXXXXXXXXX'; //specify your api key here$mandrill = new Mandrill($apikey);
$message = new stdClass();$message->html = $message1;$message->text = $message1;$message->subject = $subject;$message->from_email = "blog@koonk.com";//Sender Email$message->from_name = "KOONK";//Sender Name$message->to = array(array("email" => $to_email));$message->track_opens = true;
$response = $mandrill->messages->send($message);
}
“$apikey = 'XXXXXXXXXX'; //specify your api key here”这里需要你指定你的 API 密钥（从 Mandrill 账户中获得）。语法：
<?php$to = "abc@example.com";$subject = "This is a test email";$message = "Hello World!"; send_email($to,$subject,$message);?>
为了达到最好的效果，最好按照 Mandrill 的教程去配置 DNS。
3. PHP 函数：阻止 SQL 注入
SQL 注入或者 SQLi 常见的攻击网站的手段，使用下面的代码可以帮助你防止这些注入。
function clean($input)
{ if (is_array($input))
{ foreach ($input as $key => $val)
{ $output[$key] = clean($val); // $output[$key] = $this->clean($val); }
} else
{ $output = (string) $input; // if magic quotes is on then use strip slashes
if (get_magic_quotes_gpc())
{ $output = stripslashes($output);
} // $output = strip_tags($output);
$output = htmlentities($output, ENT_QUOTES, 'UTF-8');
}// return the clean text
return $output;}
语法：
<?php$text = "<script>alert(1)</script>";$text = clean($text);echo $text;?>
4. 检测用户位置
使用下面的函数，可以检测用户是在哪个城市访问你的网站。
function detect_city($ip) {
$default = 'UNKNOWN';
$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 $default;
}
}语法：
<?php$ip = $_SERVER['REMOTE_ADDR'];$city = detect_city($ip);echo $city;?>
5. 获取 Web 页面的源代码
使用下面的函数，可以获取任意 Web 页面的 HTML 代码。
function display_sourcecode($url)
{$lines = file($url);$output = "";foreach ($lines as $line_num => $line) {
// loop thru each line and prepend line numbers
$output.= "Line #<b>{$line_num}</b> : " . htmlspecialchars($line) . "<br>\n";
}
}
语法：
<?php$url = "http://blog.koonk.com";$source = display_sourcecode($url);echo $source;?>6. 计算喜欢你的 Facebook 页面的用户
function fb_fan_count($facebook_name)
{ $data = json_decode(file_get_contents("https://graph.facebook.com/".$facebook_name)); $likes = $data->likes; return $likes;
}语法：
<?php$page = "koonktechnologies";$count = fb_fan_count($page);echo $count;?>
7. 确定任意图片的主导颜色
function dominant_color($image)
{$i = imagecreatefromjpeg($image);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);
}8. whois 查询
使用下面的函数可以获取任何域名用户的完整细节。
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 $output;
}语法：
<?php$domain = "http://www.blog.koonk.com";$result = whois_query($domain);print_r($result);?>
9. 验证邮箱地址
有时候，当在网站填写表单，用户可能会输入错误的邮箱地址，这个函数可以验证邮箱地址是否有效。
function is_validemail($email)
{$check = 0;if(filter_var($email,FILTER_VALIDATE_EMAIL))
{$check = 1;
}return $check;
}语法：
<?php$email = "blog@koonk.com";$check = is_validemail($email);echo $check;// If the output is 1, then email is valid.?>
10. 获取用户的真实 IP
function getRealIpAddr()
{
if (!emptyempty($_SERVER['HTTP_CLIENT_IP']))
{
$ip=$_SERVER['HTTP_CLIENT_IP'];
}
elseif (!emptyempty($_SERVER['HTTP_X_FORWARDED_FOR']))
//to check ip is pass from proxy {
$ip=$_SERVER['HTTP_X_FORWARDED_FOR'];
}
else
{
$ip=$_SERVER['REMOTE_ADDR'];
}
return $ip;
}语法：
<?php$ip = getRealIpAddr();echo $ip;?>
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