WordPress Interview Questions and Answers 2

Q1. How will you disable theme and plugin editing in your WordPress admin?

Ans. Adding the following constant will disable theme and plugin editing from within the WordPress admin:

define(‘DISALLOW_FILE_EDIT’, true);

---

Q2. How will you prevent automatic update to a plugin which you have modified?

Ans. You can do it by changing the name of the plugin’s directory then activating it again into your WordPress dashboard. Alternatively, you can modify the name of the plugin to achieve the same.

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Remove index.php from URL in Codeigniter

codetyrant

Open applications/config/config.php and make the following changes :

Replace

With

And add the following code to a new file and save it as .htaccess inside the root folder :

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Detecting Device Type in a web application: Mobile, Tablet or Desktop

To check whether the request is coming from mobile, tablet or desktop.

function detectDevice() {
	$tablet_browser = 0;
	$mobile_browser = 0;
	
	if (preg_match('/(tablet|ipad|playbook)|(android(?!.*(mobi|opera mini)))/i', strtolower($_SERVER['HTTP_USER_AGENT']))) {
		$tablet_browser++;
	}
	
	if (preg_match('/(up.browser|up.link|mmp|symbian|smartphone|midp|wap|phone|android|iemobile)/i', strtolower($_SERVER['HTTP_USER_AGENT']))) {
		$mobile_browser++;
	}
	
	if ((strpos(strtolower($_SERVER['HTTP_ACCEPT']),'application/vnd.wap.xhtml+xml') > 0) or ((isset($_SERVER['HTTP_X_WAP_PROFILE']) or isset($_SERVER['HTTP_PROFILE'])))) {
		$mobile_browser++;
	}
	
	$mobile_ua = strtolower(substr($_SERVER['HTTP_USER_AGENT'], 0, 4));
	$mobile_agents = array(
		'w3c ','acs-','alav','alca','amoi','audi','avan','benq','bird','blac',
		'blaz','brew','cell','cldc','cmd-','dang','doco','eric','hipt','inno',
		'ipaq','java','jigs','kddi','keji','leno','lg-c','lg-d','lg-g','lge-',
		'maui','maxo','midp','mits','mmef','mobi','mot-','moto','mwbp','nec-',
		'newt','noki','palm','pana','pant','phil','play','port','prox',
		'qwap','sage','sams','sany','sch-','sec-','send','seri','sgh-','shar',
		'sie-','siem','smal','smar','sony','sph-','symb','t-mo','teli','tim-',
		'tosh','tsm-','upg1','upsi','vk-v','voda','wap-','wapa','wapi','wapp',
		'wapr','webc','winw','winw','xda ','xda-');
	 
	if (in_array($mobile_ua,$mobile_agents)) {
		$mobile_browser++;
	}

	if (strpos(strtolower($_SERVER['HTTP_USER_AGENT']),'opera mini') > 0) {
		$mobile_browser++;
		//Check for tablets on opera mini alternative headers
		$stock_ua = strtolower(isset($_SERVER['HTTP_X_OPERAMINI_PHONE_UA']) ? $_SERVER['HTTP_X_OPERAMINI_PHONE_UA'] : (isset($_SERVER['HTTP_DEVICE_STOCK_UA']) ? $_SERVER['HTTP_DEVICE_STOCK_UA'] : ''));
		if (preg_match('/(tablet|ipad|playbook)|(android(?!.*mobile))/i', $stock_ua)) {
			$tablet_browser++;
		}
	}
	 
	if ($tablet_browser > 0) {
	   $device = 'tablet';
	} else if ($mobile_browser > 0) {
	   $device = 'mobile';
	} else {
	   $device = 'desktop';
	}
	return $device;
}

Now call this function wherever you need it.

echo detectDevice();

Add Magento Admin User Using MySQL Script

How to add Magento Admin User Using MySQL Script ?

Here is the very simple answer to this question. This script quickly adds a Magento Admin user directly into the database. It is possible to run this script from the command line or by copying and pasting into phpMyAdmin. Most of these fields are trivial, I’m just listing them so you don’t miss anything.

1. Set the salt portion of your password. You’ll rarely need to change this. If you do, just use two lower case letters of your choice.
2. Set your password. At least 8 characters in length and at least one digit.
3. Firstname: Enter admin’s first name.
4. Lastname: Enter admin’s last name.
5. Enter email of admin user.
6. Enter username where ‘myuser’ is set. Notice ‘myuser’ shows up in two places.
7. Enter Firstname again. This is more symbolic to label the rule.

LOCK TABLES `admin_role` WRITE , `admin_user` WRITE;
 
SET @SALT = "sid";
SET @PASS = CONCAT(MD5(CONCAT( @SALT , "password") ), CONCAT(":", @SALT ));
SELECT @EXTRA := MAX(extra) FROM admin_user WHERE extra IS NOT NULL;
 
INSERT INTO `admin_user` (firstname,lastname,email,username,password,created,lognum,reload_acl_flag,is_active,extra) 
VALUES ('Firstname','Lastname','email@example.com','myuser',@PASS,NOW(),0,0,1,@EXTRA);
 
INSERT INTO `admin_role` (parent_id,tree_level,sort_order,role_type,user_id,role_name) 
VALUES (1,2,0,'U',(SELECT user_id FROM admin_user WHERE username = 'myuser'),'Firstname');
 
UNLOCK TABLES;

And you’re done. Now you can login to your admin.. 🙂

Source: Activo

Share your pages on Social Networking websites

To share your pages on social Networking sites is an easy Task now.

You can share your page to your friend on their WhatsApp also.

Click Here to download the script needed to run WhatsApp share.

<script type="text/javascript">if(typeof wabtn4fg==="undefined"){wabtn4fg=1;h=document.head||document.getElementsByTagName("head")[0],s=document.createElement("script");s.type="text/javascript";s.src="http://www.itrusoft.com/blogbysid/blogfiles/whatsapp-button.js";h.appendChild(s);}</script>

replace the existing URL with your site URL and link the whatsapp JS to it.

<?php
$shareSource = urlencode('blogbysid.wordpress.com');
$shareActualUrl = 'https://blogbysid.wordpress.com/2013/09/03/google-maps-in-grayscale/';
$shareActualTitle = 'Google Maps in Grayscale';
$shareUrl = urlencode($shareActualUrl);
$shareTitle = urlencode($shareActualTitle);
$shareDescription = urlencode('This example displays a grayscale saturation in Google maps:');
$shareImgSrc = urlencode('https://blogbysid.files.wordpress.com/2013/09/gray-google-map.jpg');
$hashtags = 'blogbysid'; // comma separated list of hashtags, with no # on them
?>

replace these title, links with yours

The below code generates the link to share your page on respective pages

<a title="WhatsApp" href="whatsapp://send" data-text="<?php echo $shareActualTitle; ?>" data-href="<?php echo $shareActualUrl; ?>" class="wa_btn wa_btn_s">WhatsApp</a>

<a title="Facebook" target="_blank" href="https://www.facebook.com/sharer/sharer.php?u=<?php echo $shareUrl; ?>&t=<?php echo $shareTitle; ?>">Facebook</a>

<a title="Twitter" target="_blank" href="https://twitter.com/share?text=<?php echo $shareTitle; ?>&url=<?php echo $shareUrl; ?>&hashtags=<?php echo $hashtags; ?>">Twitter</a>

<a title="Google Plus" target="_blank" href="https://plus.google.com/share?url=<?php echo $shareUrl; ?>">Google Plus</a>

<a title="LinkedIn" target="_blank" href="https://www.linkedin.com/shareArticle?mini=true&url=<?php echo $shareUrl; ?>&title=<?php echo $shareTitle; ?>&summary=<?php echo $shareDescription; ?>&source=<?php echo $shareSource; ?>">LinkedIn</a>

<a title="Pinterest" target="_blank" href="https://pinterest.com/pin/create/button/?url=<?php echo $shareUrl; ?>&media=<?php echo $shareImgSrc; ?>&description=<?php echo $shareDescription; ?>">Pinterest</a>

Remaining Characters Counter

To find out how many characters remaining in input box or textarea when user type, like we see in Twitter or Delicious and other sites as well.

Add this code in your input box or textarea.

onfocus="characterCount(250, this.id, 'whyMeCount');"  and  maxlength="250"

where,
250 is the number of characters you what the box should take. You can change it as per your need.
whyMeCount is the id (#whyMeCount) of the html element where you want to display the count
and, whyMe id the id of the element on which we need to count characters on.

Example: 
<textarea id="whyMe" onfocus="characterCount(250, this.id, 'whyMeCount');" maxlength="250"></textarea>
<div id="whyMeCount"></div>

Now, add this JavaScript function in your script tag

function characterCount( text_max, boxId, countId ){
	var text_length = $( '#' + boxId ).val().length;
	if(text_length > 0) {
		$( '#' + countId ).html((text_max-text_length) + ' characters remaining');
	} else {
		$( '#' + countId ).html(text_max + ' characters remaining');
	}
	
	$( '#' + boxId ).on('keyup blur', function() {
		text_length = $( '#' + boxId ).val().length;
		var text_remaining = text_max - text_length;
		$( '#' + countId ).html(text_remaining + ' characters remaining');
	});
}

Generate and Download .ics file for an event using jQuery

Here is the code to generate and download the .ics file for an event using jQuery.

var todayDate	= new Date();
var msgData	= todayDate.toISOString();
var startDate	= e.start.toISOString();
var endDate	= e.end.toISOString();

var icsMSG1 = "BEGIN:VCALENDAR\r\nVERSION:2.0\r\nPRODID:https://www.google.com/\r\nBEGIN:VEVENT\r\nUID:https://www.google.com/\r\nDTSTAMP:" + msgData + "Z\r\nDTSTART:" + startDate + "\r\n";

var icsMSG2 = '';
if(endDate != '') {
    icsMSG2 = "DTEND:" + endDate +"\r\n";
}

icsMSG3 = "SUMMARY:" + title + "\r\nEND:VEVENT\r\nEND:VCALENDAR";

icsMSG = icsMSG1 + icsMSG2 + icsMSG3;

$('.test-ics').click(function(){
    window.open( "data:text/calendar;charset=utf8," + escape(icsMSG));
});

and, add this line in your html code

<div><a class="test-ics">Add to Calendar</a></div>

replace e.start with your event start date & time
replace e.end with your event end date & time
replace title with your event title