PHP实用代码片段(一)

2018-02-27 09:00:12来源:cnblogs.com作者:dreams7433人点击

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1. 发送 SMS

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 = "[email protected]";//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$to = "[email protected]";$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$email = "[email protected]";$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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