Basically, I have a set of pages in a folder, which have the title somephrasehere_09.php, somephrasehere_10.php, somephrasehere_11.php, etc. On each of these pages, I want to include a common code that acts as a previous and next link. So, on the 10.php page, I want some code that will link to 09.php (and one for 11.php), and on another page, say 05.php, I want to be able to use the same code, resulting in links to 04.php and 06.php.
Now, my PHP knowledge is limited, but it seems to me that manipulating URLs and adding/subtracting numbers to create a new URL should be fairly simple. So, can someone help me with how to do this?
Sorry if you're not supposed to post requests here
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