Please go to Appearance > Menus and check the Logic field for your menu items, see if any of them have US constant in them. I have a problem with php 7 syntaxI installed this plugin called simple table managerhttpswordpressorgpluginssimpletablemanagerand upon . Wordpress - Notice: Use of undefined constant Redux_TEXT_DOMAIN - assumed 'Redux_TEXT_DOMAIN' I am building my first Wordpress site, I just downloaded and installed v3.9.1. PHP Notice: Use of undefined constant php - assumed 'php' Proceed to WordPress and tell them about that problem Next time, proceed to WordPress immediately, as this is not a Xampp issue, its a WordPress issue. So, I guess that 'Notice: Use of undefined constant REQUEST_URI' will be shown in case of using original Vantage theme. The Italian Garante new guidelines for GDPR and Cookies use on Joomla! (See also Array do's and don'ts) So always use quotes when you mean a string. Warning: Use of undefined constant reply_text - assumed 'reply_text' . 単純な入力ミスで「Use of undefined constant」（未定義の定数の使用）のようなエラーメッセージが表示される原因は、表示しようと思った文字列が定数（内容が固定の要素）だと判断されてしまうからです。 以下は定数を出力する例です。 Thanks for contributing an answer to WordPress Development Stack Exchange! If for any reason this automatic file creation doesn't work, don't worry. Edit the file C:\xampp\htdocs\ngn.com\wp-content\themes\mts_splash\functions.php, proceed to line 73 and look for REQUEST_URI. Wordpress: How to fix Warning: Use of undefined constant _ - assumed '_' (this will throw an Error in a future version of PHP)?Helpful? Follow edited Jun 25, 2020 at 17:57. pppery. 「Notice: Use of undefined constant」と表示されるとき - 西沢直木のIT講座 websites January 10, 2022; 50% Black Friday Discount at Web357 November 25, 2021; All Web357 extensions are 100% fully compatible with Joomla! 【已解决】VSCode调试WordPress的PHP代码报错：Warning Use of undefined constant ... Having to sift through unnecessary WP error_log (s). . Modified 1 year, 10 months ago. Also the filter overrides the constant. Notice: Use of undefined constant php - assumed 'php' . #35560 (Use of undefined constant DB_USER - WordPress Posted a reply to [Include Fussball.de Widgets] Warning: Use of undefined constant INTL_IDNA_VARIANT_UTS46, on the site WordPress.org Forums: Hallo Ralf, Mittwald muss eingestehen das Ihre Servereinstellungen nicht ganz sauber sind und bieten folgende… Warning: Use of undefined constant NONCE_SALT | WordPress.org Notice: Use of undefined constant REQUEST_URI - wordpress.stackexchange.com