Use 10 php code snippets.

PHP is an embedded HTML language and a scripting language that is executed on the server side to embed HTML documents. PHP has hundreds of basic functions and supports thousands of extensions. These functions are well loaded on the PHP site, but PHP is an embedded HTML language and a script language that is executed on the server side to embed HTML documents. PHP has hundreds of basic functions and supports thousands of extensions. These functions are well loaded on the PHP site, but the built-in libraries have various names. The PHP code library contains countless useful PHP code snippets. every developer must constantly improve their "toolbox ". With these code snippets, you can save a lot of time. let's take a look.

1. find the distance between Longitudes and Latitudes

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

2. Improve the cURL function

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. clear user input

]*?>.*?@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. check geographic location by IP address (city or country)

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

5. set password strength

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. check the browser language. only available $ availableLanguages can be used as an array ('en', 'Del', 'els ')

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. create a data URL

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

8. create a more friendly page title SEO URL

Input example: $ 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))));}

9. ultimate encryption function

// 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-use any twitter name to load user resources on any page.

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 -- used to create files in a topic, for example, example. php

loadTimeline("phpsnips")->getTweets();foreach($feed as $time => $message){    echo "
".$twitter->formatTweet($message)."
At: ".$time."
";}