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10个经常用的php片段_PHP教程
- WBOYOriginal
- 2016-07-13 10:37:211201Durchsuche
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
|
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;
}
}
|
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 $output;
}
?>
|
4.通过IP（城市、国家）检测地理位置
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function detect_city($ip)
{
$default = 'Hollywood,
CA';
if (!is_string($ip)
|| strlen($ip) <code class="js string">'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 : ([^
<code class="js string">}i', $content, $regs) ) { $city = $regs[1]; } if (
preg_match('{
State/Province : ([^
<code class="js string">}i', $content, $regs) ) { $state = $regs[1]; } if(
$city!='' && $state!='' ){
$location = $city . ', ' . $state; return $location;
}else{ return $default;
} }
|
5.设置密码强度
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100){
$strength = 100;
}
return $strength;
}
var_dump(password_strength("Correct Horse Battery
Staple"));
echo "
";
var_dump(password_strength("Super Monkey Ball"));
echo "
";
var_dump(password_strength("Tr0ub4dor&3"));
echo "
";
var_dump(password_strength("abc123"));
echo "
";
var_dump(password_strength("sweet"));
|
6.检测浏览器语言，只提供可用的$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']);
//start going through each one
foreach ($langs as $value){
$choice=substr($value,0,2);
if(in_array($choice,
$availableLanguages)){
return $choice;
}
}
}
return $default;
}
|
7.创建数据URL
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function data_uri($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
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function make_seo_name($title)
{
return preg_replace('/[^a-z0-9_-]/i', '',
strtolower(str_replace(' ', '-',
trim($title))));
}
|
9.终极加密功能
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// 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 $hash;
}
|
10a.Tweeter Feed Runner——使用任意twitter名，可在任意页面上加载用户资源。
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pversion;
}
public function loadTimeline($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 $tweet;
}
}
|
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loadTimeline("phpsnips")->getTweets();
foreach($feed as $time => $message){
echo ";
}
|
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