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Getting Wordpress next/previous sibling page links

Updated on November 28, 2013
Source

You can find many articles in Google related to next/previous sibling page links, I tried many putting function in theme functions calling those functions in the post page but nothing worked. You can also find many plugins about this maybe those plugins work but they didn't work for they only returned the post link not the sibling page link. So what I did was I wrote my own code for next/previous sibling page. It was really easy so I thought I should share this with people so they don't bang their head on the wall like I did.

Next/Previous Sibling Pages Link

To get the next or previous sibling page links I assigned some variables and wrote two simple conditions.

You have to use them in the Single Post file of your theme.

<?PHP
$link = get_permalink();
$prev = $page - 1;
$next = $page + 1;


//Below condition is for previous page.
if ($page == 1) {

} else {
?>
<a href="<?php echo "" . $link . "" . $prev . ""; ?>" title="Previous">Previous Page</a>

<?PHP
}

//Below condition is for next page
if ($page == $numpages) {

} else {
?>

<a href="<?php echo "" . $link . "" . $next . ""; ?>" title="Next">Next Page</a>

<?PHP
}
?>

The variables are explained below

$link // This variable recovers the post link by running get_permalink();

$page // This variable gives the number of current page, it is a default variable created by Wordpress.

$prev // This variable subtracts 1 from the number of current page to get the number of previous page.

$next // This variable adds 1 to the number of current page to get the number of next page.

The code I've written is for the blogs in which the permalinks are based on post names. Now we have to look at the conditions.

Getting The Previous Page Link

//Condition to get the link of previous page.
<?PHP

if ($page == 1) {

} else {

?>

<a href="<?php echo "" . $link . "" . $prev . ""; ?>" title="Previous">Previous Page</a>

<?PHP
}
?>

You can see that if the condition is true it won't return anything, that's because I didn't want to show any link if there wasn't any previous sibling page. So the condition above checks if the current page is the first, if it is then it won't return anything, if it is not the first then it will return the previous page link.

<a href="<?php echo "" . $link . "" . $prev . ""; ?>" title="Previous">Previous Page</a>

Getting The Next Page Link

The second condition uses two variables one is the same and another is:

$numpages // It is a built in variable of Wordpress which returns the total number of pages.

So the second condition checks if the current page is the last page by matching the number of current page with the total number of pages, if it is the last page then it won't show anything and if it isn't then it will show the next page link.


<?PHP
if ($page == $numpages) {

} else {

?>

<a href="<?php echo "" . $link . "" . $next . ""; ?>" title="Next">Next Page</a>

<?PHP
}
?>

Next/Previous Page Links For Default Permalinks

As I wrote above that these codes work for the permalinks which are based on post names but don't worry if you are using the default permalinks of Wordpress which are like this: www.yourwebsite.com/?p=24 then don't worry use the below codes to get the links.

// For previous link with the default permalink please use the below code:

<a href="<?php echo "" . $link . "&page=" . $prev . ""; ?>" title="Previous">Previous Page</a>

// For next link with the default permalink please use the below code:

<a href="<?php echo "" . $link . "&page=" . $next . ""; ?>" title="Next">Next Page</a>

There are many ways to get different results but everywhere I searched involved some functions and plugins never explaining what code does what, what is the purpose of different variables. I think that if you write a tutorial about coding you should explain every inch of the code even the small variables. Since the purpose of this tutorial is only about getting next/previous sibling page links which is done through PHP that is why I didn't explain the HTML codes. There are many resources on the internet which explain HTML and PHP but if you're here then you do have a pretty good understanding of both languages.

Hope the above tutorial solved your problem.

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