suchen

Heim >Backend-Entwicklung >PHP-Tutorial >直接拿来用 10个PHP代码片段_PHP

直接拿来用 10个PHP代码片段_PHP

WBOY
WBOYOriginal
2016-06-01 12:04:16883Durchsuche

　　PHP是一种HTML内嵌式的语言，是一种在服务器端执行的嵌入HTML文档的脚本语言。PHP拥有数以百计的基本功能，支持上千种扩展。这些功能都被很好的加载在PHP站点上，但内置的库有各种各样的命名。在PHP代码库中包含了无数个有用的PHP代码片段，每位开发者都需要不断完善自己的“工具箱”。有了这些代码片段可以为你节省大量的时间，一起来看下。

直接拿来用 10个PHP代码片段_PHP

　　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

　　源码

　　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;
	}
}

　　源码

　　3.清理用户输入

]*?>.*?@si',   // Strip out javascript
    &#39;@<[\/\!]*?[^<>]*?>@si&#39;,            // Strip out HTML tags
    &#39;@]*?>.*?@siU&#39;,    // Strip style tags properly
    &#39;@@&#39;         // Strip multi-line comments
  );

    $output = preg_replace($search, &#39;&#39;, $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;
}
?>

　　源码

　　4.通过IP（城市、国家）检测地理位置

function detect_city($ip) {

        $default = &#39;Hollywood, CA&#39;;

        if (!is_string($ip) || strlen($ip) < 1 || $ip == &#39;127.0.0.1&#39; || $ip == &#39;localhost&#39;)             $ip = &#39;8.8.8.8&#39;;           $curlopt_useragent = &#39;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)&#39;;           $url = &#39;http://ipinfodb.com/ip_locator.php?ip=&#39; . urlencode($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         => &#39;http://&#39; . $_SERVER[&#39;HTTP_HOST&#39;],
        );

        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(&#39;{

	
City : ([^<]*)
}i&#39;, $content, $regs) ) { $city = $regs[1]; } if ( preg_match(&#39;{
	
State/Province : ([^<]*)

}i&#39;, $content, $regs) ) { $state = $regs[1]; } if( $city!=&#39;&#39; && $state!=&#39;&#39; ){ $location = $city . &#39;, &#39; . $state; return $location; }else{ return $default; } }

　　源码

　　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"));

　　源码

　　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=&#39;en&#39;){
	
	if (isset($_SERVER[&#39;HTTP_ACCEPT_LANGUAGE&#39;])) {
			
		$langs=explode(&#39;,&#39;,$_SERVER[&#39;HTTP_ACCEPT_LANGUAGE&#39;]);

		//start going through each one
		foreach ($langs as $value){
	
			$choice=substr($value,0,2);
			if(in_array($choice, $availableLanguages)){
				return $choice;
				
			}
			
		}
	} 
	return $default;
}

　　源码

　　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";
}

　　源码

　　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($title) {
	return preg_replace(&#39;/[^a-z0-9_-]/i&#39;, &#39;&#39;, strtolower(str_replace(&#39; &#39;, &#39;-&#39;, trim($title))));
}

　　源码

　　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;
}

　　源码

　　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){ 
        $this->twitURL .= &#39;statuses/user_timeline.xml?screen_name=&#39;.$user.&#39;&count=&#39;.$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 => $message){ 
    echo "<div class=&#39;tweet&#39;>".$twitter->formatTweet($message)."<br />At: ".$time."</div>"; 
}

　　源码

　　英文出自：Codegeekz

　　

Stellungnahme：
Der Inhalt dieses Artikels wird freiwillig von Internetnutzern beigesteuert und das Urheberrecht liegt beim ursprünglichen Autor. Diese Website übernimmt keine entsprechende rechtliche Verantwortung. Wenn Sie Inhalte finden, bei denen der Verdacht eines Plagiats oder einer Rechtsverletzung besteht, wenden Sie sich bitte an admin@php.cn
Vorheriger Artikel：php中的常用魔术方法总结_PHPNächster Artikel：浅析51个PHP处理字符串的函数_PHP

In Verbindung stehende Artikel

Mehr sehen