How to replace plain URLs with links in JavaScript or PHP?

Hello Friends

If you want to convert plain text in to URLs in JavaScript or PHP. This is good solution for you.

In PHP :

public function makeLinks($str)
{
    $reg_exUrl = "/(http|https|ftp|ftps)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?/";
    $urls = array();
    $urlsToReplace = array();
    if(preg_match_all($reg_exUrl, $str, $urls)) {
        $numOfMatches = count($urls[0]);
        $numOfUrlsToReplace = 0;
        for($i=0; $i<$numOfMatches; $i++) {
            $alreadyAdded = false;
            $numOfUrlsToReplace = count($urlsToReplace);
            for($j=0; $j<$numOfUrlsToReplace; $j++) {
                if($urlsToReplace[$j] == $urls[0][$i]) {
                    $alreadyAdded = true;
                }
            }
            if(!$alreadyAdded) {
                array_push($urlsToReplace, $urls[0][$i]);
            }
        }
        $numOfUrlsToReplace = count($urlsToReplace);
        for($i=0; $i<$numOfUrlsToReplace; $i++) {
            $str = str_replace($urlsToReplace[$i], "<a target='_balnk' href=\"".$urlsToReplace[$i]."\">".$urlsToReplace[$i]."</a> ", $str);
        }
        return $str;
    } else {
        return $str;
    }
}

In JavaScript

function makeLinks(text) {
 var exp = /(\b(https?|ftp|file):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/ig;
 return text.replace(exp,"<a target='_blank' href='$1'>$1</a>");
}

Hope it helps.

Android Detection with JavaScript or PHP

Hello Friends

You have a web application and you want to detect that if your Application is opened from android device than it will be redirect to any other URL that will be Android compatible.This is a good solution for you.

What’s obvious is that Android development is a hot topic that will only grow. Here are a few methods by which you can detect iOS‘ main competitor: Android.

The JavaScript

Searching the user agent string for “Android” is the quickest method:

var ua = navigator.userAgent.toLowerCase();
var isAndroid = ua.indexOf("android") > -1; //&& ua.indexOf("mobile");
if(isAndroid)
{
// Do something! // Redirect to Android-site? window.location = 'http://android.viralsolani.co';
}

The PHP

Again, we’ll use PHP’s strstr function to search for Android in the user agent:

$ua = strtolower($_SERVER['HTTP_USER_AGENT']);
if(stripos($ua,'android') !== false){// && stripos($ua,'mobile') !== false) {
header('Location: http://android.viralsolani.co');
exit();
}

Bonus! .htaccess Detection

We can even use .htaccess directives to detect and react to Android devices!

RewriteCond %{HTTP_USER_AGENT} ^.*Android.*$
 RewriteRule ^(.*)$ http://android.viralsolani.co [R=301]

And there you have it: three different Android device detection! Have fun with your mobile development!

Resource :

http://davidwalsh.name/detect-android

Thanks

 

Regular Expressions Cheat Sheet

The Regular Expressions cheat sheet is a one-page reference sheet. It is a guide to patterns in regular expressions, and is not specific to any single language.

regular-expressions-cheat-sheet

Scrolling div with Javascript

You can scroll div with javascript. You need to have one mainContainer which will contain the child for it. eg.

I will have mainArea div with child div myReport.

You need to fixed the height for the mainArea div with style

Now your div can scroll, You now need to write one line code in any javascript function

function scrollMainArea()
{
document.getElementById(“mainArea”).scrollTop = 0;
}

This will move your myReport div to show the top portion of your division.