56个PHP开发常用代码片段(上)

2018年01月08日 1.47k 次阅读 0 条评论 0 人点赞
1.发送短信 在开发Web或者移动应用程序的时候,经常遇到需要发送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,需要一个短信网关。大部分的短信会提供一个API,这里是使用MSG91作为短信网关。
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 verification
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);

//get response
$output = curl_exec($ch);
//Print error if any
if(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:
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提供者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);
}
$apikey = 'XXXXXXXXXX'; //specify your api key here”这里需要你指定你的 API 密钥(从 Mandrill 账户中获得)
语法:
为了达到最好的效果,最好按照Mandrill的教程去配置DNS。 3. PHP函数:阻止SQL注入 SQL注入或者SQLi常见的攻击网站的手段,使用下面的代码可以帮助你防止这些工具。
function clean($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:
alert(1)";
$text = clean($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('{
  • 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 $default; } }
    语法:
    5.获取网页的源代码 使用下面的函数,可以获取任意Web页面的HTML代码
    function display_sourcecode($url)
    {
    $lines = file($url);
    $output = "";
    foreach ($lines as $line_num => $line) { 
        // loop thru each line and prepend line numbers
        $output.= "Line #{$line_num} : " . htmlspecialchars($line) . "\n";
    }
    }
    语法:
    6.计算喜欢你的Facebook页面的用户
    function fb_fan_count($facebook_name)
    {
        $data = json_decode(file_get_contents("https://graph.facebook.com/".$facebook_name));
        $likes = $data->likes;
        return $likes;
    }
    语法:
    7.确定任意图片的主导颜色
    function dominant_color($image)
    {
    $i = imagecreatefromjpeg($image);
    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/$total);
    }
    8. whois查询 使用下面的函数可以获取任何域名用户的完整细节
    function whois_query($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 $output;
    }
    语法:
    9.验证邮箱地址 有时候,当在网站填写表单,用户可能会输入错误的邮箱地址,这个函数可以验证邮箱地址是否有效。
    function is_validemail($email)
    {
    $check = 0;
    if(filter_var($email,FILTER_VALIDATE_EMAIL))
    {
    $check = 1;
    }
    return $check;
    }
    语法:
    10.获取用户的真实IP
    function getRealIpAddr()  
    {  
        if (!emptyempty($_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 $ip;  
    }
    语法:
    11.转换网址:从字符串变成超链接 如果你正在开发论坛,博客或者是一个常规的表单提交,很多时候都要用户访问一个网站。使用这个函数,URL字符串就可以自动的转换为超链接。
    function makeClickableLinks($text) 
    {  
     $text = eregi_replace('(((f|ht){1}tp://)[-a-zA-Z0-9@:%_+.~#?&//=]+)',  
     '\1', $text);  
     $text = eregi_replace('([[:space:]()[{}])(www.[-a-zA-Z0-9@:%_+.~#?&//=]+)',  
     '\1\2', $text);  
     $text = eregi_replace('([_.0-9a-z-]+@([0-9a-z][0-9a-z-]+.)+[a-z]{2,3})',  
     '\1', $text);  
    
    return $text;  
    }
    语法:
    12.阻止多个IP访问你的网站 这个代码片段可以方便你禁止某些特定的IP地址访问你的网站
    if ( !file_exists('blocked_ips.txt') ) {
     $deny_ips = array(
      '127.0.0.1',
      '192.168.1.1',
      '83.76.27.9',
      '192.168.1.163'
     );
    } else {
     $deny_ips = file('blocked_ips.txt');
    }
    // read user ip adress:
    $ip = isset($_SERVER['REMOTE_ADDR']) ? trim($_SERVER['REMOTE_ADDR']) : '';
    
    // search current IP in $deny_ips array
    if ( (array_search($ip, $deny_ips))!== FALSE ) {
     // address is blocked:
     echo 'Your IP adress ('.$ip.') was blocked!';
     exit;
    }
    13.强制性文件下载 如果你需要下载特定的文件而不用另开新窗口,下面的代码片段可以帮助你。
    function force_download($file) 
    { 
        $dir      = "../log/exports/"; 
        if ((isset($file))&&(file_exists($dir.$file))) { 
           header("Content-type: application/force-download"); 
           header('Content-Disposition: inline; filename="' . $dir.$file . '"'); 
           header("Content-Transfer-Encoding: Binary"); 
           header("Content-length: ".filesize($dir.$file)); 
           header('Content-Type: application/octet-stream'); 
           header('Content-Disposition: attachment; filename="' . $file . '"'); 
           readfile("$dir$file"); 
        } else { 
           echo "No file selected"; 
        } 
    }
    语法:
    14.创建JSON数据 使用下面的PHP片段可以创建JSON数据,可以方便你创建移动应用的Web服务
    $json_data = array ('id'=>1,'name'=>"Mohit");
    echo json_encode($json_data);
    15.压缩zip文件 使用下面的PHP片段可以即时压缩zip文件
    function create_zip($files = array(),$destination = '',$overwrite = false) {  
        //if the zip file already exists and overwrite is false, return false  
        if(file_exists($destination) && !$overwrite) { return false; }  
        //vars  
        $valid_files = array();  
        //if files were passed in...  
        if(is_array($files)) {  
            //cycle through each file  
            foreach($files as $file) {  
                //make sure the file exists  
                if(file_exists($file)) {  
                    $valid_files[] = $file;  
                }  
            }  
        }  
        //if we have good files...  
        if(count($valid_files)) {  
            //create the archive  
            $zip = new ZipArchive();  
            if($zip->open($destination,$overwrite ? ZIPARCHIVE::OVERWRITE : ZIPARCHIVE::CREATE) !== true) {  
                return false;  
            }  
            //add the files  
            foreach($valid_files as $file) {  
                $zip->addFile($file,$file);  
            }  
            //debug  
            //echo 'The zip archive contains ',$zip->numFiles,' files with a status of ',$zip->status;  
    
            //close the zip -- done!  
            $zip->close();  
    
            //check to make sure the file exists  
            return file_exists($destination);  
        }  
        else  
        {  
            return false;  
        }  
    }
    语法:
    16.解压文件
    function unzip($location,$newLocation)
    {
            if(exec("unzip $location",$arr)){
                mkdir($newLocation);
                for($i = 1;$i< count($arr);$i++){
                    $file = trim(preg_replace("~inflating: ~","",$arr[$i]));
                    copy($location.'/'.$file,$newLocation.'/'.$file);
                    unlink($location.'/'.$file);
                }
                return TRUE;
            }else{
                return FALSE;
            }
    }
    语法:
    17.缩放图片
    function resize_image($filename, $tmpname, $xmax, $ymax)  
    {  
        $ext = explode(".", $filename);  
        $ext = $ext[count($ext)-1];  
        if($ext == "jpg" || $ext == "jpeg")  
            $im = imagecreatefromjpeg($tmpname);  
        elseif($ext == "png")  
            $im = imagecreatefrompng($tmpname);  
        elseif($ext == "gif")  
            $im = imagecreatefromgif($tmpname);  
        $x = imagesx($im);  
        $y = imagesy($im);  
        if($x <= $xmax && $y <= $ymax)  
            return $im;  
        if($x >= $y) {  
            $newx = $xmax;  
            $newy = $newx * $y / $x;  
        }  
        else {  
            $newy = $ymax;  
            $newx = $x / $y * $newy;  
        }  
        $im2 = imagecreatetruecolor($newx, $newy);  
        imagecopyresized($im2, $im, 0, 0, 0, 0, floor($newx), floor($newy), $x, $y);  
        return $im2;   
    }
    18.使用mail()发送邮件 之前我们提供了如何使用Mandrill发送邮件的PHP代码片段,但是如果你不想使用第三方服务,那么可以使用下面的PHP代码片段。
    function send_mail($to,$subject,$body)
    {
    $headers = "From: KOONK\r\n";
    $headers .= "Reply-To: blog@koonk.com\r\n";
    $headers .= "Return-Path: blog@koonk.com\r\n";
    $headers .= "X-Mailer: PHP5\n";
    $headers .= 'MIME-Version: 1.0' . "\n";
    $headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
    mail($to,$subject,$body,$headers);
    }
    语法:
    19.把秒转换成天数,小时数和分钟
    function secsToStr($secs) {
        if($secs>=86400){$days=floor($secs/86400);$secs=$secs%86400;$r=$days.' day';if($days<>1){$r.='s';}if($secs>0){$r.=', ';}}
        if($secs>=3600){$hours=floor($secs/3600);$secs=$secs%3600;$r.=$hours.' hour';if($hours<>1){$r.='s';}if($secs>0){$r.=', ';}}
        if($secs>=60){$minutes=floor($secs/60);$secs=$secs%60;$r.=$minutes.' minute';if($minutes<>1){$r.='s';}if($secs>0){$r.=', ';}}
        $r.=$secs.' second';if($secs<>1){$r.='s';}
        return $r;
    }
    语法:

    作为一个真正的程序员,首先应该尊重编程,热爱你所写下的程序,他是你的伙伴,而不是工具。

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