直接拿来用 10个PHP代码片段_PHP

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。

　　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: 2.6025feet: 13,741.4350yards: 4,580.4783kilometers: 4.1884meters: 4,188.3894

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　　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($ch, CURLOPT_POST, 1);		c<p style="color:transparent">。本文来源gao!%daima.com搞$代*!码网1</p><cite>搞代gaodaima码</cite>url_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

]*?>.*?@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

function detect_city($ip) {        $default = 'Hollywood, CA';        if (!is_string($ip) || strlen($ip)  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

 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’)

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;}

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　　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";}

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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

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

// 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;}

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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。

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>"; }

　　源码

　　英文出自：Codegeekz

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