Title: Canonical tag problem
Last modified: August 31, 2016

---

# Canonical tag problem

 *  Resolved [Paulh267](https://wordpress.org/support/users/paulh267/)
 * (@paulh267)
 * [10 years, 3 months ago](https://wordpress.org/support/topic/canonical-tag-problem/)
 * I’ve got some woocommerce products on my website and I need to tell search engines
   that the source of content is actually on a different page for each of these 
   products, so I’m using a canonical tag.
 * This is the code I’m using:
 *     ```
       <?php
       if(is_product( array( '215-70-r16-h-achilles-desert-hawk-h-t', '225-55-r18-v-achilles-desert-hawk-h-t', '225-65-r17-h-achilles-desert-hawk-h-t', '235-50-r18-v-achilles-desert-hawk-h-t', '235-55-r18-h-achilles-desert-hawk-h-t', '235-60-r17-h-achilles-desert-hawk-h-t', '235-65-r17-h-achilles-desert-hawk-h-t', '245-65-r17-h-achilles-desert-hawk-h-t', '245-70-r16-h-achilles-desert-hawk-h-t', '255-50-r19-h-achilles-desert-hawk-h-t', '255-55-r18-h-achilles-desert-hawk-h-t', '255-70-r16-h-achilles-desert-hawk-h-t', '265-65-r17-h-achilles-desert-hawk-h-t', '275-70-r16-h-achilles-desert-hawk-h-t')))
       {
       echo '<link rel="canonical" href="https://tyresdirectuk.co.uk/achilles-tyres/desert-hawk-h-t/" />';
       }
       ?>
       ```
   
 * For some reason it’s outputting this at the top of the page:
    `'; } ?>`
 * And when I go to the page source it says:
    `<link rel="canonical" href="https://
   tyresdirectuk.co.uk/shop/tyres/235-50-r18-v-achilles-desert-hawk-h-t/" />`
 * If anyone could advise on this situation it would be appreciated 🙂
 * Link: [https://tyresdirectuk.co.uk/shop/tyres/235-50-r18-v-achilles-desert-hawk-h-t/](https://tyresdirectuk.co.uk/shop/tyres/235-50-r18-v-achilles-desert-hawk-h-t/)

Viewing 6 replies - 1 through 6 (of 6 total)

 *  [Takis Bouyouris](https://wordpress.org/support/users/nevma/)
 * (@nevma)
 * [10 years, 3 months ago](https://wordpress.org/support/topic/canonical-tag-problem/#post-6984737)
 * Hi there,
 * I do not see the `'; } ?>` being output on top of the page as you are describing.
   Perhaps that problem stopped or you have already fixed it on your own?
 * However the canonical url is indeed as you say. First of all it is important 
   to ask where you have put your code above. Is it exactly where the canonical 
   url is echoed in the head.php or is it used inside a function that runs inside
   a hook?
 *  Thread Starter [Paulh267](https://wordpress.org/support/users/paulh267/)
 * (@paulh267)
 * [10 years, 3 months ago](https://wordpress.org/support/topic/canonical-tag-problem/#post-6984766)
 * Hi Nevma,
 * I played around with the code some more and managed to get it to work (kind of).
 * This an example of the code we have currently. All code is in our header.php 
   file:
 *     ```
       <?php
           // Achilles Desert Hawk UHP
           if(is_product( array( '245-40-r20-99v-achilles-desert-hawk-uhp-e-c-72', '245-45-r20-99v-achilles-desert-hawk-uhp-e-c-72', '255-45-r20-105v-achilles-desert-hawk-uhp-f-c-72' )))
           {
           echo '<link rel="canonical" href="https://tyresdirectuk.co.uk/achilles-tyres/desert-hawk-uhp/" />';
           }
   
           // General Grabber GT
           elseif(is_product( array( '195-80-r15-96h-general-grabber-gt-e-c-71', '205-70-r15-96h-general-grabber-gt-e-c-71', '205-80-r16-104t-general-grabber-gt-e-c-72', '215-60-r17-96h-general-grabber-gt-e-c-71', '215-65-r16-98h-general-grabber-gt-e-c-71', '215-65-r16-98v-general-grabber-gt-e-c-71', '215-70-r16-100h-general-grabber-gt-e-c-71', '225-55-r17-97v-general-grabber-gt-e-c-71', '225-55-r18-98v-general-grabber-gt-e-c-71', '225-60-r18-100h-general-grabber-gt-e-c-71', '225-65-r17-102v-general-grabber-gt-e-c-71', '225-70-r16-103h-general-grabber-gt-e-c-71', '235-50-r18-97v-general-grabber-gt-e-c-71' )))
           {
           echo '<link rel="canonical" href="https://tyresdirectuk.co.uk/general-tyres/grabber-gt/" />';
           }
   
       // Kumho Road Venture AT KL78
       elseif(is_product( array( '30-950-r15-104s-kumho-road-venture-at-kl78-f-e-78', '195-80-r15-100s-kumho-road-venture-at-kl78-e-e-74', '205-75-r15-97s-kumho-road-venture-at-kl78-e-e-74', '205-80-r16-104s-kumho-road-venture-at-kl78-e-e-74')))
       {
       echo '<link rel="canonical" href="https://tyresdirectuk.co.uk/kumho-tyres/road-venture-at-kl78/" />';
       }
       ?>
       ```
   
 * The problem is that the respective canonical links aren’t being outputted to 
   the correct pages.
 * Here’s an example: [https://tyresdirectuk.co.uk/shop/tyres/205-75-r15-97s-kumho-road-venture-at-kl78-e-e-74/](https://tyresdirectuk.co.uk/shop/tyres/205-75-r15-97s-kumho-road-venture-at-kl78-e-e-74/)
 * This should have the following line of code between the header tags:
    `<link 
   rel="canonical" href="https://tyresdirectuk.co.uk/kumho-tyres/road-venture-at-
   kl78/" />`
 * but instead it says:
    `<link rel="canonical" href="https://tyresdirectuk.co.uk/
   achilles-tyres/desert-hawk-uhp/" />`
 * If anyone could please advise on this it would be much appreciated as I can’t
   figure it out 🙂
 *  [Takis Bouyouris](https://wordpress.org/support/users/nevma/)
 * (@nevma)
 * [10 years, 3 months ago](https://wordpress.org/support/topic/canonical-tag-problem/#post-6984768)
 * Seems like the `is_product` WooCommerce function is not working properly. Are
   you sure it expects the argument you have given to it? I would suggest trying
   to narrow the problem down by checking if the `is_product()` works with only 
   one product inside it. And first check with the product ID (that is the post 
   ID). Does the function work then?
 *  Thread Starter [Paulh267](https://wordpress.org/support/users/paulh267/)
 * (@paulh267)
 * [10 years, 3 months ago](https://wordpress.org/support/topic/canonical-tag-problem/#post-6984769)
 * I think you might be right about the is_product(). I just tried this:
 *     ```
       <?php
       // Achilles Desert Hawk UHP
       if(is_product( array( 28596, 28595 )))
       {
       echo '<link rel="canonical" href="https://tyresdirectuk.co.uk/achilles-tyres/desert-hawk-uhp/" />';
       }
   
       // General Grabber GT
       elseif(is_product( array( 11170, 11171 )))
       {
       echo '<link rel="canonical" href="https://tyresdirectuk.co.uk/general-tyres/grabber-gt/" />';
       }
       ?>
       ```
   
 * Product ID 11170 is still displaying the following in it’s source code between
   the header tags:
    `<link rel="canonical" href="https://tyresdirectuk.co.uk/achilles-
   tyres/desert-hawk-uhp/" />`
 * I’ll get in contact with both the theme developer and woothemes to check if there
   are any known problems on their side.
 * Thanks for the help 🙂
 *  [Takis Bouyouris](https://wordpress.org/support/users/nevma/)
 * (@nevma)
 * [10 years, 3 months ago](https://wordpress.org/support/topic/canonical-tag-problem/#post-6984770)
 * Welcome! 🙂
 *  Thread Starter [Paulh267](https://wordpress.org/support/users/paulh267/)
 * (@paulh267)
 * [10 years, 3 months ago](https://wordpress.org/support/topic/canonical-tag-problem/#post-6984780)
 * For anyone coming here having the same problem. The problem was the is_product()
   code. It needs to be is_single()
 * Problem solved! 🙂

Viewing 6 replies - 1 through 6 (of 6 total)

The topic ‘Canonical tag problem’ is closed to new replies.

## Tags

 * [20q2016](https://wordpress.org/support/topic-tag/20q2016/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 6 replies
 * 2 participants
 * Last reply from: [Paulh267](https://wordpress.org/support/users/paulh267/)
 * Last activity: [10 years, 3 months ago](https://wordpress.org/support/topic/canonical-tag-problem/#post-6984780)
 * Status: resolved

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