10个超级有用的PHP代码片段果断收藏

本文小编将为你奉上10个超级有用的PHP代码片段

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: 2.6025   feet: 13,741.4350   yards: 4,580.4783   kilometers: 4.1884   meters: 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 $tweets;    }    public function getTimelineArray(){    return simplexml_load_string($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>";   }     

直接拿来用,10个PHP代码片段,还犹豫什么,果断收藏吧

10个超级有用的PHP代码片段果断收藏

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