欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

10个超级有用的PHP代码片段果断收藏

程序员文章站 2022-05-18 12:51:46
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 getdistancebe...

本文小编将为你奉上10个超级有用的php代码片段。

10个超级有用的PHP代码片段果断收藏

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