46 个非常有用的 PHP 代码片段

php  /  管理员 发布于 7年前   126

这些 PHP 片段对于 PHP 初学者也非常有帮助，非常容易学习，让我们开始学习吧～

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：

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：

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 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 $output.= "Line #{$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 URL：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 $deny_ips arrayif ( (array_search($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";$headers .= "Reply-To: [email protected]\r\n";$headers .= "Return-Path: [email protected]\r\n";$headers .= "X-Mailer: PHP5\n";$headers .= 'MIME-Version: 1.0' . "\n";$headers .= 'Content-type: text/html; ' . "\r\n";mail($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：

20. 数据库连接
连接 MySQL 数据库

21. 目录清单
使用下面的 PHP 代码片段可以在一个目录中列出所有文件和文件夹

function list_files($dir){ if(is_dir($dir)) { if($handle = opendir($dir)) {  while(($file = readdir($handle)) !== false)  {  if($file != "." && $file != ".." && $file != "Thumbs.db"/*pesky windows, images..*/)  {   echo ''.$file.''."\n";  }  }  closedir($handle); } }}

语法：

22. 检测用户语言
使用下面的 PHP 代码片段可以检测用户浏览器所使用的语言

function get_client_language($availableLanguages, $default='en'){ if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) { $langs=explode(',',$_SERVER['HTTP_ACCEPT_LANGUAGE']); foreach ($langs as $value){  $choice=substr($value,0,2);  if(in_array($choice, $availableLanguages)){  return $choice;  } } }  return $default;}

23. 查看 CSV 文件

function readCSV($csvFile){ $file_handle = fopen($csvFile, 'r'); while (!feof($file_handle) ) { $line_of_text[] = fgetcsv($file_handle, 1024); } fclose($file_handle); return $line_of_text;} 语法：

24. 从 PHP 数据创建 CSV 文件

function generateCsv($data, $delimiter = ',', $enclosure = '"') { $handle = fopen('php://temp', 'r+'); foreach ($data as $line) {  fputcsv($handle, $line, $delimiter, $enclosure); } rewind($handle); while (!feof($handle)) {  $contents .= fread($handle, 8192); } fclose($handle); return $contents;} 语法：

25. 解析 XML 数据

$xml_string="  ben A   h2o K "; //load the xml string using simplexml function$xml = simplexml_load_string($xml_string); //loop through the each node of moleculeforeach ($xml->molecule as $record){ //attribute are accessted by echo $record['name'], ' '; //node are accessted by -> operator echo $record->symbol, ' '; echo $record->code, '';}

26. 解析 JSON 数据

$json_string='{"id":1,"name":"rolf","country":"russia","office":["google","oracle"]} ';$obj=json_decode($json_string);//print the parsed dataecho $obj->name; //displays rolfecho $obj->office[0]; //displays google

27. 获取当前页面 URL
这个 PHP 片段可以帮助你让用户登录后直接跳转到之前浏览的页面

function current_url(){$url = "http://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];$validURL = str_replace("&", "&", $url);return validURL;}

语法：

28. 从任意的 Twitter 账号获取最新的 Tweet

function my_twitter($username) { $no_of_tweets = 1; $feed = "http://search.twitter.com/search.atom?q=from:" . $username . "&rpp=" . $no_of_tweets; $xml = simplexml_load_file($feed); foreach($xml->children() as $child) { foreach ($child as $value) {  if($value->getName() == "link") $link = $value['href'];  if($value->getName() == "content") {  $content = $value . ""; echo '
'.$content.'  
';  }  } } } 语法：

29. 转发数量
使用这个 PHP 片段可以检测你的页面 URL 有多少转发数量

function tweetCount($url) { $content = file_get_contents("http://api.tweetmeme.com/url_info?url=".$url); $element = new SimpleXmlElement($content); $retweets = $element->story->url_count; if($retweets){ return $retweets; } else { return 0; }} 语法：

30. 计算两个日期的差

diff($date2);echo "difference " . $interval->y . " years, " . $interval->m." months, ".$interval->d." days "; // shows the total amount of days (not divided into years, months and days like above)echo "difference " . $interval->days . " days ";-------------------------------------------------------- OR  /** * Calculate differences between two dates with precise semantics. Based on PHPs DateTime::diff() * implementation by Derick Rethans. Ported to PHP by Emil H, 2011-05-02. No rights reserved. *  * See here for original code: * http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/tm2unixtime.c?revision=302890&view=markup * http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/interval.c?revision=298973&view=markup */function _date_range_limit($start, $end, $adj, $a, $b, $result){ if ($result[$a] < $start) { $result[$b] -= intval(($start - $result[$a] - 1) / $adj) + 1; $result[$a] += $adj * intval(($start - $result[$a] - 1) / $adj + 1); } if ($result[$a] >= $end) { $result[$b] += intval($result[$a] / $adj); $result[$a] -= $adj * intval($result[$a] / $adj); } return $result;}function _date_range_limit_days($base, $result){ $days_in_month_leap = array(31, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31); $days_in_month = array(31, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31); _date_range_limit(1, 13, 12, "m", "y", &$base); $year = $base["y"]; $month = $base["m"]; if (!$result["invert"]) { while ($result["d"] < 0) {  $month--;  if ($month < 1) {  $month += 12;  $year--;  }  $leapyear = $year % 400 == 0 || ($year % 100 != 0 && $year % 4 == 0);  $days = $leapyear ? $days_in_month_leap[$month] : $days_in_month[$month];  $result["d"] += $days;  $result["m"]--; } } else { while ($result["d"] < 0) {  $leapyear = $year % 400 == 0 || ($year % 100 != 0 && $year % 4 == 0);  $days = $leapyear ? $days_in_month_leap[$month] : $days_in_month[$month];  $result["d"] += $days;  $result["m"]--;  $month++;  if ($month > 12) {  $month -= 12;  $year++;  } } } return $result;}function _date_normalize($base, $result){ $result = _date_range_limit(0, 60, 60, "s", "i", $result); $result = _date_range_limit(0, 60, 60, "i", "h", $result); $result = _date_range_limit(0, 24, 24, "h", "d", $result); $result = _date_range_limit(0, 12, 12, "m", "y", $result); $result = _date_range_limit_days(&$base, &$result); $result = _date_range_limit(0, 12, 12, "m", "y", $result); return $result;}/** * Accepts two unix timestamps. */function _date_diff($one, $two){ $invert = false; if ($one > $two) { list($one, $two) = array($two, $one); $invert = true; } $key = array("y", "m", "d", "h", "i", "s"); $a = array_combine($key, array_map("intval", explode(" ", date("Y m d H i s", $one)))); $b = array_combine($key, array_map("intval", explode(" ", date("Y m d H i s", $two)))); $result = array(); $result["y"] = $b["y"] - $a["y"]; $result["m"] = $b["m"] - $a["m"]; $result["d"] = $b["d"] - $a["d"]; $result["h"] = $b["h"] - $a["h"]; $result["i"] = $b["i"] - $a["i"]; $result["s"] = $b["s"] - $a["s"]; $result["invert"] = $invert ? 1 : 0; $result["days"] = intval(abs(($one - $two)/86400)); if ($invert) { _date_normalize(&$a, &$result); } else { _date_normalize(&$b, &$result); } return $result;}$date = "2014-12-04 19:37:22";echo '
';print_r( _date_diff( strtotime($date), time() ) );echo '
'; ?>

31. 删除文件夹内容

function Delete($path){ if (is_dir($path) === true) { $files = array_diff(scandir($path), array('.', '..')); foreach ($files as $file) {  Delete(realpath($path) . '/' . $file); } return rmdir($path); } else if (is_file($path) === true) { return unlink($path); } return false;}

语法：

32. 搜索和高亮字符串中的关键字

function highlighter_text($text, $words){ $split_words = explode( " " , $words ); foreach($split_words as $word) { $color = "#4285F4"; $text = preg_replace("|($word)|Ui" ,  "$1" , $text ); } return $text;}

语法：

33. 写入文件

34. 根据 URL 下载图片

function imagefromURL($image,$rename){$ch = curl_init($image);curl_setopt($ch, CURLOPT_HEADER, 0);curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);curl_setopt($ch, CURLOPT_BINARYTRANSFER,1);$rawdata=curl_exec ($ch);curl_close ($ch);$fp = fopen("$rename",'w');fwrite($fp, $rawdata); fclose($fp);}

语法：

35. 检测 URL 是否有效

function isvalidURL($url){$check = 0;if (filter_var($url, FILTER_VALIDATE_URL) !== false) { $check = 1;}return $check;} 语法：

36. 生成二维码

function qr_code($data, $type = "TXT", $size ='150', $ec='L', $margin='0') { $types = array("URL" =--> "http://", "TEL" => "TEL:", "TXT"=>"", "EMAIL" => "MAILTO:"); if(!in_array($type,array("URL", "TEL", "TXT", "EMAIL"))) { $type = "TXT"; } if (!preg_match('/^'.$types[$type].'/', $data)) { $data = str_replace("\\", "", $types[$type]).$data; } $ch = curl_init(); $data = urlencode($data); curl_setopt($ch, CURLOPT_URL, 'http://chart.apis.google.com/chart'); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_POSTFIELDS, 'chs='.$size.'x'.$size.'&cht=qr&chld='.$ec.'|'.$margin.'&chl='.$data); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_HEADER, false); curl_setopt($ch, CURLOPT_TIMEOUT, 30); $response = curl_exec($ch); curl_close($ch); return $response;}

语法：

37. 计算两个地图坐标之间的距离

function getDistanceBetweenPointsNew($latitude1, $longitude1, $latitude2, $longitude2) { $theta = $longitude1 - $longitude2; $miles = (sin(deg2rad($latitude1)) * sin(deg2rad($latitude2))) + (cos(deg2rad($latitude1)) * cos(deg2rad($latitude2)) * cos(deg2rad($theta))); $miles = acos($miles); $miles = rad2deg($miles); $miles = $miles * 60 * 1.1515; $feet = $miles * 5280; $yards = $feet / 3; $kilometers = $miles * 1.609344; $meters = $kilometers * 1000; return compact('miles','feet','yards','kilometers','meters'); }

语法：

 40.770623, 'long' => -73.964367);$point2 = array('lat' => 40.758224, 'long' => -73.917404);$distance = getDistanceBetweenPointsNew($point1['lat'], $point1['long'], $point2['lat'], $point2['long']);foreach ($distance as $unit => $value) { echo $unit.': '.number_format($value,4).'';}?>

38. 获取一个特定话题标签的所有 Tweets

function getTweets($hash_tag) { $url = 'http://search.twitter.com/search.atom?q='.urlencode($hash_tag) ; echo "
Connecting to $url ...
"; $ch = curl_init($url); curl_setopt ($ch, CURLOPT_RETURNTRANSFER, TRUE); $xml = curl_exec ($ch); curl_close ($ch); //If you want to see the response from Twitter, uncomment this next part out: //echo "
Response:
"; //echo "
".htmlspecialchars($xml)."
"; $affected = 0; $twelement = new SimpleXMLElement($xml); foreach ($twelement->entry as $entry) { $text = trim($entry->title); $author = trim($entry->author->name); $time = strtotime($entry->published); $id = $entry->id; echo "
Tweet from ".$author.": ".$text." Posted ".date('n/j/y g:i a',$time)."
"; } return true ;}

39. 添加 th,st,nd 或者 rd 作为数字的后缀

Friday the 13thfunction ordinal($cdnl){  $test_c = abs($cdnl) % 10;  $ext = ((abs($cdnl) %100 < 21 && abs($cdnl) %100 > 4) ? 'th'  : (($test_c < 4) ? ($test_c < 3) ? ($test_c < 2) ? ($test_c < 1)   ? 'th' : 'st' : 'nd' : 'rd' : 'th'));  return $cdnl.$ext; }

语法：

40. 限制文件下载的速度

 20,5 kb/s)$download_rate = 20.5; if(file_exists($local_file) && is_file($local_file)) { // send headers header('Cache-control: private'); header('Content-Type: application/octet-stream');  header('Content-Length: '.filesize($local_file)); header('Content-Disposition: filename='.$download_file);  // flush content flush();  // open file stream $file = fopen($local_file, "r");  while(!feof($file)) {  // send the current file part to the browser print fread($file, round($download_rate * 1024));   // flush the content to the browser flush();  // sleep one second sleep(1);  }   // close file stream fclose($file);}else { die('Error: The file '.$local_file.' does not exist!');}?>

41. 把文本转换成图片

42. 获取远程文件的大小

function remote_filesize($url, $user = "", $pw = ""){ ob_start(); $ch = curl_init($url); curl_setopt($ch, CURLOPT_HEADER, 1); curl_setopt($ch, CURLOPT_NOBODY, 1); if(!empty($user) && !empty($pw)) { $headers = array('Authorization: Basic ' . base64_encode("$user:$pw")); curl_setopt($ch, CURLOPT_HTTPHEADER, $headers); } $ok = curl_exec($ch); curl_close($ch); $head = ob_get_contents(); ob_end_clean(); $regex = '/Content-Length:\s([0-9].+?)\s/'; $count = preg_match($regex, $head, $matches); return isset($matches[1]) ? $matches[1] : "unknown";}

语法：

43. 使用 imagebrick 进行 pdf 到图像的转换

44. 使用 tinyurl 生成短网址

function get_tiny_url($url) {  $ch = curl_init();  $timeout = 5;  curl_setopt($ch,CURLOPT_URL,'http://tinyurl.com/api-create.php?url='.$url);  curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);  curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);  $data = curl_exec($ch);  curl_close($ch);  return $data; }

语法：

45. youtube 下载链接生成器
使用下面的 PHP 片段可以让你的用户下载 Youtube 视频

function str_between($string, $start, $end){ $string = " ".$string; $ini = strpos($string,$start); if ($ini == 0) return ""; $ini += strlen($start); $len = strpos($string,$end,$ini) - $ini; return substr($string,$ini,$len); }function get_youtube_download_link(){ $youtube_link = $_GET['youtube']; $youtube_page = file_get_contents($youtube_link); $v_id = str_between($youtube_page, "&video_id=", "&"); $t_id = str_between($youtube_page, "&t=", "&"); $flv_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id"; $hq_flv_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=6"; $mp4_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=18"; $threegp_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=17"; echo "\t\tDownload (right-click > save as):\n\t\t"; echo "FLV\n\t\t"; echo "HQ FLV (if available)\n\t\t"; echo "MP4\n\t\t"; echo "3GP\n";}

46. Facebook 样式的时间戳

Facebook (x mins age, y hours ago etc)function nicetime($date){ if(empty($date)) { return "No date provided"; }  $periods  = array("second", "minute", "hour", "day", "week", "month", "year", "decade"); $lengths  = array("60","60","24","7","4.35","12","10");  $now  = time(); $unix_date  = strtotime($date);  // check validity of date if(empty($unix_date)) {  return "Bad date"; } // is it future date or past date if($now > $unix_date) {  $difference = $now - $unix_date; $tense  = "ago";   } else { $difference = $unix_date - $now; $tense  = "from now"; }  for($j = 0; $difference >= $length