Title: Getting error php_data is not defined Last modified: August 15, 2017 --- # Getting error php_data is not defined * [bashwust](https://wordpress.org/support/users/bashwust/) * (@bashwust) * [8 years, 9 months ago](https://wordpress.org/support/topic/gettin-error-php_data-is-not-defined/) * Hi, In Chrome console I am getting the error Uncaught ReferenceError: php_data is not defined at autoptimize_07478c6646be8783b9ecf21cd72b7bfe.js:91 where the large number is different for each page or post. * The site is currently running on PHP version 5.6. * Any help appreciated. Ian. - This topic was modified 8 years, 9 months ago by [bashwust](https://wordpress.org/support/users/bashwust/). Viewing 9 replies - 1 through 9 (of 9 total) * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [8 years, 9 months ago](https://wordpress.org/support/topic/gettin-error-php_data-is-not-defined/#post-9413212) * hey [@bashwust](https://wordpress.org/support/users/bashwust/) * what are your JS autoptimize settings? * can you share your URL? * Thread Starter [bashwust](https://wordpress.org/support/users/bashwust/) * (@bashwust) * [8 years, 9 months ago](https://wordpress.org/support/topic/gettin-error-php_data-is-not-defined/#post-9417481) * Hi Thanks for your reply. I have just unselected all the settings and the problem has gone. I will now redo all of the settings and get back to you. I don’t own the site and so sharing the URL might be a problem at the moment. * Cheers * Thread Starter [bashwust](https://wordpress.org/support/users/bashwust/) * (@bashwust) * [8 years, 9 months ago](https://wordpress.org/support/topic/gettin-error-php_data-is-not-defined/#post-9418179) * Hi I have just the “optimize CSS” checked but after looking at the source code the CSS has not been aggregated. * The site URL is [https://www.dev.propertyinvestmentsuk.co.uk/](https://www.dev.propertyinvestmentsuk.co.uk/) * Thanks for any help you can give. - This reply was modified 8 years, 9 months ago by [bashwust](https://wordpress.org/support/users/bashwust/). Reason: typo * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [8 years, 9 months ago](https://wordpress.org/support/topic/gettin-error-php_data-is-not-defined/#post-9418958) * guess you fixed in the mean time [@bashwust](https://wordpress.org/support/users/bashwust/), I had a quick look and do see; * `` * 🙂 * Thread Starter [bashwust](https://wordpress.org/support/users/bashwust/) * (@bashwust) * [8 years, 9 months ago](https://wordpress.org/support/topic/gettin-error-php_data-is-not-defined/#post-9421407) * Thanks for the reply but it seems like the CSS is broken now. This is a great plugin and I used it on other sites just seem to be getting errors this time. * Thread Starter [bashwust](https://wordpress.org/support/users/bashwust/) * (@bashwust) * [8 years, 9 months ago](https://wordpress.org/support/topic/gettin-error-php_data-is-not-defined/#post-9421428) * I have seen the issue listed in the FAQ and will give that a try later. Can you tell which file it is I am edit and where please? * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [8 years, 9 months ago](https://wordpress.org/support/topic/gettin-error-php_data-is-not-defined/#post-9422422) * not entirely sure what part of the FAQ you’re referring to, but if you mean where those “code snippets” should be added then your easiest and safest bet is using [the code snippets plugin](https://wordpress.org/plugins/code-snippets) (the less safe alternative being your child theme’s functions.php). * Thread Starter [bashwust](https://wordpress.org/support/users/bashwust/) * (@bashwust) * [8 years, 9 months ago](https://wordpress.org/support/topic/gettin-error-php_data-is-not-defined/#post-9422580) * I was thinking it was this: add_filter(‘autoptimize_filter_speedupper’,’__return_false’); * from : My Autoptimized CSS/ JS is broken after upgrading from 2.1 to 2.2! * Even though I haven’t upgraded I just came in at 2.2 * Thanks for the support. * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [8 years, 9 months ago](https://wordpress.org/support/topic/gettin-error-php_data-is-not-defined/#post-9422930) * OK, the [code snippets plugin](https://wordpress.org/plugins/code-snippets) is your friend. * but how is your CSS broken? do you get a “white page of death”, or an entirely unstyled page, or a partially unstyled page? and have you tried excluding one or more CSS files from optimization? Viewing 9 replies - 1 through 9 (of 9 total) The topic ‘Getting error php_data is not defined’ is closed to new replies. * ![](https://ps.w.org/autoptimize/assets/icon-256X256.png?rev=2211608) * [Autoptimize](https://wordpress.org/plugins/autoptimize/) * [Frequently Asked Questions](https://wordpress.org/plugins/autoptimize/#faq) * [Support Threads](https://wordpress.org/support/plugin/autoptimize/) * [Active Topics](https://wordpress.org/support/plugin/autoptimize/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/autoptimize/unresolved/) * [Reviews](https://wordpress.org/support/plugin/autoptimize/reviews/) * 9 replies * 2 participants * Last reply from: [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * Last activity: [8 years, 9 months ago](https://wordpress.org/support/topic/gettin-error-php_data-is-not-defined/#post-9422930) * Status: not resolved