Moz Q&A is closed.
After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.
Javascript, PhP and SEO Impact?
-
What are the Pro's and Con's of using Java Script and PHP in a site when factoring in SEO?
-
Alan's answer is spot on.
Avoid javaScript or carefully follow best-practices so Google can crawl all content without reading javaScript. Alan is exactly right when he said: never count on Google crawling through your JavaScript to find content, but also never count on being able to hide anything from Google via JavaScript.
Whether you use PHP or not is not directly relevant. PHP is executed server-side, so Google never sees your PHP code and doesn't care. What matters is whether your programmer writes PHP code that will generate search friendly HTML code, url structure, etc.
-
JavaScript is one of several technologies that offers severe limitations in search engines and their ability to properly see content, then just as important but often overlooked, properly and cleanly evaluate that content from an SEO perspective.
Specific considerations:
- Google does a "fair" job at discovering content passed through JavaScript (either on-page or at the code level)
- A "fair" job means it's hit and miss as to whether their system can actually find that content
- Whatever content the Google system CAN find via JavaScript is NOT necessarily able to be used to properly evaluate content intent, focus or relationship to other content
So - the best practices recommendation is if you want/need content to be found and properly evaluated by Google (or Bing) do NOT pass it through JavaScript.
And also, if you want to HIDE content from Google, don't assume you can successfully do so via JavaScript either.
As for PHP, its the most widely adopted and utilized web programming language out there. The language by itself is essentially SEO neutral. It's all in how a programmer utilized PHP that matters. In the hands of a programmer that either truly understands SEO or collaborates closely with an SEO expert (who also understands the limitations/pitfalls that can arise with "bad" (SEO-unfriendly) PHP coding, it's a great language.
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
Browse Questions
Explore more categories
-
Moz Tools
Chat with the community about the Moz tools.
-
SEO Tactics
Discuss the SEO process with fellow marketers
-
Community
Discuss industry events, jobs, and news!
-
Digital Marketing
Chat about tactics outside of SEO
-
Research & Trends
Dive into research and trends in the search industry.
-
Support
Connect on product support and feature requests.
Related Questions
-
Migration from HTML to Wordpress - SEO Implications?
I am in the process of having a wordpress site developed to replace my current HTML site. (I currently have my website in html and a blog in wordpress in a sub directory). I am doing this in phases to try and preserve as much of my good rankings as possible. My first phase is to replicate my site with the exact same pages, meta data, and site structure. I'm hoping that google will see this as not much change and not change my rankings for the worse. I also made it a goal that my site speed tests be at least equal to what they are now. We will have to 301 all of the URLs however since it will be going from /example.html to /example. I believe my blog will also need to move into the root directory as well, so I need to 301 all of those pages. I plan to wait a couple months for Phase 2. Phase 2 involves replacing old content (photo galleries), and introducing new content (virtual tours, videos, new pages, etc.) One of my reasons for moving to wordpress is to keep up with current trends a little easier since I have very little time. (I am owner, website maintainer, SEO - all on my own). My question here is three parts. 1. Do you think this strategy will work to preserve my current rankings? 2. Do you have any lessons learned or advice to share with me to make this as smooth as possible? 3. Do I really need to wait to add new content? I might get antsy and want to do it sooner! 🙂 Thank you in advance!
Web Design | | CalicoKitty20000 -
Best SEO practice - Umbrella brand with several domains
Hi, we have several blogs and comparison sites on specific topics. All the domains rank on top positions in very competitive niche markets. We think that we can get more profit out of the domains when we put them under an umbrella brand. Customers that visit domain A can then also find products easily on domain B. We see this for example on health.com, with several brands in the top. To maintain or improve our rankings i'm looking for specific information for the link structure. For example, is it better to have the 'about us'/rel=author on each domain, with contributors on that specific domain or is it better to have them all in the (umbrella) brand domain. At the moment we have the structure like this: domainA.com, domainA.com/blog, domainA.com/about-us and domainB.com, domainB.com/blog, domainB.com/about-us. I think to maintain the rankings it is best to keep specific content (like blog/ about us) on the domain. So is it the best to just do side wide links with a logo (like health.com) and what about hosting? We work with wordpress, so all domains will be hosted on one ip? when we use the multiple site option of WP? All information on this topic is more than welcome 🙂
Web Design | | remkoallertz0 -
SEO and Squarespace? Is this Really an Option?
Hi all, Any feedback on Squarespace, SEO capabilites and ranking factors? I have a client wishing to use the platform and despite the good reviews, which appear to be from resellers by the way, the forums say not. Although apparently Rand Fishkin, SEOMoz (yes right here!) gave them a big thumbs up “The square space team have put together a remarkable platform, SEO friendliness! Really not sure here and don’t agree, there are many limitations and hosting with a template provider is always big no no. Cheers
Web Design | | VirginiaC
Virginia0 -
Is it bad to have /index.php at the end of a uri?
Is it bad for SEO if traffic is directed to "http://www.example.com/someuri/index.php" instead of "http://www.example.com/someuri/" and would it be works setting up a redirect rule at htaccess level?
Web Design | | NoisyLittleMonkey1 -
Script tags and seo
Hi, I have a page on my site with a google map embed, and a path drawn on the map. The path is made from a long string of coordinates. For ease I have the co-ordinates placed in a script tag at the foot of the page, amongst my javascript My question is, will this script tag hurt the seo for the page? I've read that inline js and 'data islands' can be bad, so I've been careful to keep it out of the main body of the page. Thanks, any help appreciated!
Web Design | | madegood0 -
Best layout pages for SEO
Dear all, what would be the ideal layout of a webpage for SEO? How would a homepage and landingspage look like? Thanks in advance! Best regards, Ben
Web Design | | HMK-NL0 -
SEO downsides to minimalist (copy-light) homepage?
Curious for your thoughts on this - are there any SEO downsides to not having any substantive content on the home page (big background design)? We would obviously have appropriate page titles and link structure, etc. Our guess is that if the home page doesn't have much copy, that odds are that other specific pages will tend to perform better for non-brand search terms, which seems OK. If people DO find the homepage, it would likely be a brand search or an ad referral, in which case the minimalist, non-copy design would be conversion-friendly. Does that theory hold any water? I suppose a middle ground might be a single H1 line unobtrusively on the page. Thanks in advance for any insight, guys! Sincerely, Stephen
Web Design | | PerfectPitchConcepts0 -
Live Text in Navigation Vs. Image - Does this affect SEO
I recently was asked the question if having live text in the navigation vs and image affect seo. For example, refer to this link http://markup.io/v/avsaenq856kw the navigation highlighted is seperate images. The html elements read : /images/procedures.png"> Live text html reads like this: Breast » What is better for seo value, or does it now matter having live text or an image?
Web Design | | Red_Spot_Interactive0
