Title: PHP7 compatible? Last modified: March 22, 2017 --- # PHP7 compatible? * Resolved [JKNN](https://wordpress.org/support/users/jknn/) * (@jknn) * [9 years, 2 months ago](https://wordpress.org/support/topic/php7-compatible-20/) * Is your plugin, WooCommerce PDF Invoices, PHP7 compatible? Viewing 3 replies - 1 through 3 (of 3 total) * [CrumX](https://wordpress.org/support/users/crumx/) * (@crumx) * [9 years, 2 months ago](https://wordpress.org/support/topic/php7-compatible-20/#post-8963353) * I got a lot of error after updating to php7. I wish they can release an update soon * ``` Warning: Illegal string offset 'ID' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1302 Warning: Cannot assign an empty string to a string offset in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1302 Warning: Illegal string offset 'LANG' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1307 Warning: Cannot assign an empty string to a string offset in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1307 Warning: Illegal string offset 'ID' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1355 Warning: Illegal string offset 'LANG' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1355 Warning: Illegal string offset 'ID' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1302 Warning: Cannot assign an empty string to a string offset in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1302 Warning: Illegal string offset 'LANG' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1307 Warning: Cannot assign an empty string to a string offset in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1307 Warning: Illegal string offset 'ID' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1355 Warning: Illegal string offset 'LANG' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1355 Warning: Illegal string offset 'ID' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1302 Warning: Cannot assign an empty string to a string offset in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1302 Warning: Illegal string offset 'LANG' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1307 Warning: Cannot assign an empty string to a string offset in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1307 Warning: Illegal string offset 'ID' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1355 Warning: Illegal string offset 'LANG' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1355 Warning: Illegal string offset 'ID' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1302 Warning: Cannot assign an empty string to a string offset in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1302 Warning: Illegal string offset 'LANG' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1307 Warning: Cannot assign an empty string to a string offset in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1307 Warning: Illegal string offset 'ID' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1355 Warning: Illegal string offset 'LANG' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1355 Warning: Illegal string offset 'ID' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1302 Warning: Cannot assign an empty string to a string offset in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1302 Warning: Illegal string offset 'LANG' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1307 Warning: Cannot assign an empty string to a string offset in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1307 Warning: Illegal string offset 'ID' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1355 Warning: Illegal string offset 'LANG' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1355 Warning: Illegal string offset 'ID' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1302 Warning: Cannot assign an empty string to a string offset in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1302 Warning: Illegal string offset 'LANG' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1307 Warning: Cannot assign an empty string to a string offset in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1307 Warning: Illegal string offset 'ID' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1355 Warning: Illegal string offset 'LANG' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1355 Warning: Illegal string offset 'ID' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1302 Warning: Cannot assign an empty string to a string offset in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1302 Warning: Illegal string offset 'LANG' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1307 Warning: Cannot assign an empty string to a string offset in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1307 Warning: Illegal string offset 'ID' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1355 Warning: Illegal string offset 'LANG' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1355 Warning: Illegal string offset 'ID' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1302 Warning: Cannot assign an empty string to a string offset in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1302 Warning: Illegal string offset 'LANG' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1307 Warning: Cannot assign an empty string to a string offset in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1307 Warning: Illegal string offset 'ID' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1355 Warning: Illegal string offset 'LANG' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1355 Warning: Illegal string offset 'ID' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1302 Warning: Cannot assign an empty string to a string offset in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1302 Warning: Illegal string offset 'LANG' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1307 Warning: Cannot assign an empty string to a string offset in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1307 Warning: Illegal string offset 'ID' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1355 Warning: Illegal string offset 'LANG' in /wp-content/plugins/woocommerce-pdf-invoices/lib/mpdf/classes/cssmgr.php on line 1355 ``` * Plugin Author [Bas Elbers](https://wordpress.org/support/users/baaaaas/) * (@baaaaas) * [9 years, 2 months ago](https://wordpress.org/support/topic/php7-compatible-20/#post-8968574) * I’m working on it at the moment. Next update will be fixed. * Plugin Author [Bas Elbers](https://wordpress.org/support/users/baaaaas/) * (@baaaaas) * [9 years, 1 month ago](https://wordpress.org/support/topic/php7-compatible-20/#post-9030601) * Version 2.7.1 fixed it. Viewing 3 replies - 1 through 3 (of 3 total) The topic ‘PHP7 compatible?’ is closed to new replies. * ![](https://ps.w.org/woocommerce-pdf-invoices/assets/icon-128x128.png?rev=1128583) * [Invoices for WooCommerce](https://wordpress.org/plugins/woocommerce-pdf-invoices/) * [Frequently Asked Questions](https://wordpress.org/plugins/woocommerce-pdf-invoices/#faq) * [Support Threads](https://wordpress.org/support/plugin/woocommerce-pdf-invoices/) * [Active Topics](https://wordpress.org/support/plugin/woocommerce-pdf-invoices/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/woocommerce-pdf-invoices/unresolved/) * [Reviews](https://wordpress.org/support/plugin/woocommerce-pdf-invoices/reviews/) * 3 replies * 3 participants * Last reply from: [Bas Elbers](https://wordpress.org/support/users/baaaaas/) * Last activity: [9 years, 1 month ago](https://wordpress.org/support/topic/php7-compatible-20/#post-9030601) * Status: resolved