10个经常用的php片段_PHP教程
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原创
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2016-07-13 10:37:21
1030浏览
1.查找Longitudes与Latitudes之间的距离
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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
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2.完善cURL功能
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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;
}
}
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3.清理用户输入
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]*?>.*?@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 $output;
}
?>
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4.通过IP(城市、国家)检测地理位置
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function detect_city($ip)
{
$ default = 'Hollywood,
CA' ;
if (!is_string($ip)
|| strlen($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 ;
} }
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5.设置密码强度
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100){
$strength = 100;
}
return $strength;
}
var_dump(password_strength( "Correct Horse Battery
Staple" ));
echo "
" ;
var_dump(password_strength( "Super Monkey Ball" ));
echo "
" ;
var_dump(password_strength( "Tr0ub4dor&3" ));
echo "
" ;
var_dump(password_strength( "abc123" ));
echo "
" ;
var_dump(password_strength( "sweet" ));
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6.检测浏览器语言,只提供可用的$availableLanguages作为数组(‘en’, ‘de’, ‘es’)
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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 ;
}
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7.创建数据URL
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function data_uri($file,
$mime) {
$contents=file_get_contents($file);
$base64=base64_encode($contents);
echo "data:$mime;base64,$base64" ;
}
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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
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function make_seo_name($title)
{
return preg_replace( '/[^a-z0-9_-]/i' , '' ,
strtolower(str_replace( ' ' , '-' ,
trim($title))));
}
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9.终极加密功能
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function fue($hash,$times)
{
for ($i=$times;$i>0;$i--)
{
$hash=base64_encode($hash);
$hash=md5($hash);
$hash=sha1($hash);
$hash=hash( "sha256" ,
$hash);
$hash=hash( "sha512" ,
$hash);
}
return $hash;
}
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10a.Tweeter Feed Runner——使用任意twitter名,可在任意页面上加载用户资源。
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pversion;
}
public function loadTimeline($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 $tweet;
}
}
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10b. Tweeter Feed Runner——用于在主题中创建文件,比如:example.php
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loadTimeline( "phpsnips" )->getTweets();
foreach($feed as $time => $message){
echo "" ;
}
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http://www.bkjia.com/PHPjc/735898.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/735898.htmlTechArticle1.查找Longitudes与Latitudes之间的距离 12345678910111213141516171819202122232425262728 function getDistanceBetweenPointsNew($latitude1, $longitude1, $latitude2, $longitude2)...
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