直接拿来用 10个php代码片段

PHP是一种HTML内嵌式的语言，是一种在服务器端执行的嵌入HTML文档的脚本语言。PHP拥有数以百计的基本功能，支持上千种扩展。这些功能都被很好的加载在PHP站点上，但内置的库有各种各样的命名。在PHP代码库中包含了无数个有用的PHP代码片段，每位开发者都需要不断完善自己的“工具箱”。有了这些代码片段可以为你节省大量的时间，一起来看下。

1.查找Longitudes与Latitudes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');} $point1 = array('lat' => 40.770623, 'long' => -73.964367);$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).'';} The example returns the following: miles: 2.6025feet: 13,741.4350yards: 4,580.4783kilometers: 4.1884meters: 4,188.3894

2.完善cURL功能

function xcurl($url,$ref=null,$post=array(),$ua="Mozilla/5.0 (X11; Linux x86_64; rv:2.2a1pre) Gecko/20110324 Firefox/4.2a1pre",$print=false) {    $ch = curl_init();    curl_setopt($ch, CURLOPT_AUTOREFERER, true);    if(!empty($ref)) {        curl_setopt($ch, CURLOPT_REFERER, $ref);    }    curl_setopt($ch, CURLOPT_URL, $url);    curl_setopt($ch, CURLOPT_HEADER, 0);    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);    if(!empty($ua)) {        curl_setopt($ch, CURLOPT_USERAGENT, $ua);    }    if(count($post) > 0){        curl_setopt($ch, CURLOPT_POST, 1);        curl_setopt($ch, CURLOPT_POSTFIELDS, $post);       }    $output = curl_exec($ch);    curl_close($ch);    if($print) {        print($output);    } else {        return $output;    }}

3.清理用户输入

]*?>.*?@si',   // Strip out javascript    '@<[\/\!]*?[^<>]*?>@si',            // Strip out HTML tags    '@]*?>.*?@siU',    // Strip style tags properly    '@@'         // Strip multi-line comments  );     $output = preg_replace($search, '', $input);    return $output;  }?>$val) {            $output[$var] = sanitize($val);        }    }    else {        if (get_magic_quotes_gpc()) {            $input = stripslashes($input);        }        $input  = cleanInput($input);        $output = mysql_real_escape_string($input);    }    return $output;}?>

4.通过IP（城市、国家）检测地理位置

function detect_city($ip) {         $default = 'Hollywood, CA';         if (!is_string($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('{      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; } }

5.设置密码强度

100){        $strength = 100;    }    return $strength;} var_dump(password_strength("Correct Horse Battery Staple"));echo "";var_dump(password_strength("Super Monkey Ball"));echo "";var_dump(password_strength("Tr0ub4dor&3"));echo "";var_dump(password_strength("abc123"));echo "";var_dump(password_strength("sweet"));

6.检测浏览器语言，只提供可用的$availableLanguages作为数组(‘en’, ‘de’, ‘es’)

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

7.创建数据URL

function data_uri($file, $mime) {  $contents=file_get_contents($file);  $base64=base64_encode($contents);  echo "data:$mime;base64,$base64";}

8.创建更加友好的页面标题SEO URL

输入示例：$title = “This foo’s bar is rockin’ cool!”; echo makeseoname($title); //RETURNS: //this-foos-bar-is-rockin-cool

function make_seo_name($title) {    return preg_replace('/[^a-z0-9_-]/i', '', strtolower(str_replace(' ', '-', trim($title))));}

9.终极加密功能

// f(ucking) u(ncrackable) e(ncryption) function by BlackHatDBL (www.netforme.net)function fue($hash,$times) {    // Execute the encryption(s) as many times as the user wants    for($i=$times;$i>0;$i--) {        // Encode with base64...        $hash=base64_encode($hash);        // and md5...        $hash=md5($hash);        // sha1...        $hash=sha1($hash);        // sha256... (one more)        $hash=hash("sha256", $hash);        // sha512        $hash=hash("sha512", $hash);     }    // Finaly, when done, return the value    return $hash;}

10a.Tweeter Feed Runner——使用任意twitter名，可在任意页面上加载用户资源。

pversion;    }    public function loadTimeline($user, $max = 20){        $this->twitURL .= 'statuses/user_timeline.xml?screen_name='.$user.'&count='.$max;        $ch        = curl_init();        curl_setopt($ch, CURLOPT_URL, $this->twitURL);        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);        $this->xml = curl_exec($ch);        return $this;    }    public function getTweets(){        $this->twitterArr = $this->getTimelineArray();        $tweets = array();        foreach($this->twitterArr->status as $status){            $tweets[$status->created_at->__toString()] = $status->text->__toString();        }        return $tweets;    }    public function <strong style="color:transparent">本文来源gao@daima#com搞(%代@#码@网&</strong><strong>搞gaodaima代码</strong>getTimelineArray(){        return simplexml_load_string($this->xml);    }    public function formatTweet($tweet){        $tweet = preg_replace("/(http(.+?))( |$)/","$1$3", $tweet);        $tweet = preg_replace("/#(.+?)(\h|\W|$)/", "#$1$2", $tweet);        $tweet = preg_replace("/@(.+?)(\h|\W|$)/", "@$1$2", $tweet);        return $tweet;    }}

10b. Tweeter Feed Runner——用于在主题中创建文件，比如：example.php

loadTimeline("phpsnips")->getTweets();foreach($feed as $time => $message){    echo "<div class='tweet'>".$twitter->formatTweet($message)."<br />At: ".$time."</div>";}

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