10个超级有用的PHP代码片段果断收藏

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 

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($ch,CURLOPT_POST,CURLOPT_POSTFIELDS,$post); 
 } 
 $output = curl_exec($ch); 
 curl_close($ch); 
 if($print) { 
 print($output); 
 } else { 
 return $output; 
 } 
} 

]*?>.*?@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; 
} 
?> 

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',$regs) ) { $state = $regs[1]; } if( $city!='' && $state!='' ){ $location = $city . ',' . $state; return $location; }else{ return $default; } } 

 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")); 

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,2); 
  if(in_array($choice,$availableLanguages)){ 
  return $choice; 
   
  } 
  
 } 
 } 
 return $default; 
} 

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

function make_搜索引擎优化_name($title) { 
 return preg_replace('/[^a-z0-9_-]/i',strtolower(str_replace(' ','-',trim($title)))); 
} 

// 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; 
} 

pversion; 
 } 
 public function loadTimeline($user,$max = 20){ 
 $this->twitURL .= 'statuses/user_timeline.xml?screen_name='.$user.'&count='.$max; 
 $ch = curl_init(); 
 curl_setopt($ch,$this->twitURL); 
 curl_setopt($ch,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; 
 } 
} 

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