Title: Topic Tag: undefined function | WordPress.org --- # Topic Tag: undefined function 1 [2](https://wordpress.org/support/topic-tag/undefined-function/page/2/?output_format=md) [3](https://wordpress.org/support/topic-tag/undefined-function/page/3/?output_format=md)… [10](https://wordpress.org/support/topic-tag/undefined-function/page/10/?output_format=md) [11](https://wordpress.org/support/topic-tag/undefined-function/page/11/?output_format=md) [12](https://wordpress.org/support/topic-tag/undefined-function/page/12/?output_format=md) [→](https://wordpress.org/support/topic-tag/undefined-function/page/2/?output_format=md) - Topic - Participants - Replies - Last Post * - [Error after auto-updating a blog, cannot login into the admin](https://wordpress.org/support/topic/error-after-auto-updating-a-blog-cannot-login-into-the-admin/) - Started by: [Aswelgo](https://wordpress.org/support/users/bagel/) - 3 - 3 - [6 days, 22 hours ago](https://wordpress.org/support/topic/error-after-auto-updating-a-blog-cannot-login-into-the-admin/#post-18873053) - [threadi](https://wordpress.org/support/users/threadi/) * - [[CryptX] Fatal error: Call to undefined function __doing_it_wrong()](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-__doing_it_wrong/) - Started by: [Machtnix](https://wordpress.org/support/users/hillyfov/) - 2 - 2 - [3 months, 3 weeks ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-__doing_it_wrong/#post-18760387) - [Ralf Weber](https://wordpress.org/support/users/d3395/) * - [Brickyard Broken](https://wordpress.org/support/topic/brickyard-broken/) - Started by: [Daniel Kilburn](https://wordpress.org/support/users/danielmkilburn/) - 4 - 3 - [9 months ago](https://wordpress.org/support/topic/brickyard-broken/#post-18558650) - [BluehostSupport](https://wordpress.org/support/users/bluehostsupport/) * - [[All-In-One Security (AIOS) – Security and Firewall] Undefined wp_strip_tags() and wp_parse_url()](https://wordpress.org/support/topic/undefined-wp_strip_tags-and-wp_parse_url/) - Started by: [INformigados](https://wordpress.org/support/users/informigados/) - 3 - 4 - [12 months ago](https://wordpress.org/support/topic/undefined-wp_strip_tags-and-wp_parse_url/#post-18415305) - [Jane](https://wordpress.org/support/users/jstepak/) * - [[Advanced Category and Custom Taxonomy Image] get_taxonomy_image function no longer defined in 2.0](https://wordpress.org/support/topic/get_taxonomy_image-function-no-longer-defined-in-2-0/) - Started by: [cmerrick](https://wordpress.org/support/users/cmerrick/) - 2 - 4 - [1 year, 1 month ago](https://wordpress.org/support/topic/get_taxonomy_image-function-no-longer-defined-in-2-0/#post-18349063) - [cmerrick](https://wordpress.org/support/users/cmerrick/) * - [[Index WP Users For Speed] PHP Fatal error: Uncaught Error: Call to undefined function IndexWpUsersForSpeed](https://wordpress.org/support/topic/php-fatal-error-uncaught-error-call-to-undefined-function-indexwpusersforspeed/) - Started by: [slightlydifferent](https://wordpress.org/support/users/slightlydifferent/) - 3 - 5 - [1 year, 5 months ago](https://wordpress.org/support/topic/php-fatal-error-uncaught-error-call-to-undefined-function-indexwpusersforspeed/#post-18121031) - [slightlydifferent](https://wordpress.org/support/users/slightlydifferent/) * - [Call to undefined function flock() in …/html/wp-admin/includes/misc.php:182](https://wordpress.org/support/topic/call-to-undefined-function-flock-in-html-wp-admin-includes-misc-php182/) - Started by: [mrkuvis](https://wordpress.org/support/users/mrkuvis/) - 2 - 4 - [1 year, 11 months ago](https://wordpress.org/support/topic/call-to-undefined-function-flock-in-html-wp-admin-includes-misc-php182/#post-17733940) - [mrkuvis](https://wordpress.org/support/users/mrkuvis/) * - [HELP! Call to undefined function error](https://wordpress.org/support/topic/help-call-to-undefined-function-error/) - Started by: [eranno79](https://wordpress.org/support/users/eranno79/) - 3 - 2 - [2 years, 5 months ago](https://wordpress.org/support/topic/help-call-to-undefined-function-error/#post-17192989) - [mrtom414](https://wordpress.org/support/users/mrtom414/) * - [[Paid Memberships Pro - Pods Add On] Fatal error: call to undefined function](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-112/) - Started by: [tnightingale](https://wordpress.org/support/users/tnightingale/) - 3 - 8 - [2 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-112/#post-17096752) - [Andrew Lima](https://wordpress.org/support/users/andrewza/) * - [Fatal error: Uncaught Error: Call to undefined function wp_theme_has_theme_json(](https://wordpress.org/support/topic/fatal-error-uncaught-error-call-to-undefined-function-wp_theme_has_theme_json/) - Started by: [kubanondrej](https://wordpress.org/support/users/kubanondrej/) - 3 - 2 - [3 years ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-call-to-undefined-function-wp_theme_has_theme_json/#post-16618956) - [Shameem Reza](https://wordpress.org/support/users/codechef/) * - [Fatal error: Uncaught Error: Call to undefined function wp_generate_password()](https://wordpress.org/support/topic/fatal-error-uncaught-error-call-to-undefined-function-wp_generate_password-2/) - Started by: [keatonh](https://wordpress.org/support/users/keatonh/) - 1 - 1 - [3 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-call-to-undefined-function-wp_generate_password-2/#post-16519349) - [keatonh](https://wordpress.org/support/users/keatonh/) * - [[WooCommerce] Critical error: Call to undefined function wp_is_block_theme()](https://wordpress.org/support/topic/critical-error-call-to-undefined-function-wp_is_block_theme/) - Started by: [freddiefishcake](https://wordpress.org/support/users/freddiefishcake/) - 3 - 6 - [3 years, 3 months ago](https://wordpress.org/support/topic/critical-error-call-to-undefined-function-wp_is_block_theme/#post-16329462) - [xue28 (woo-hc)](https://wordpress.org/support/users/xue28/) * - [[WooCommerce] Call to undefined function wcdrfc_fs()](https://wordpress.org/support/topic/call-to-undefined-function-wcdrfc_fs/) - Started by: [ic3dclaudio](https://wordpress.org/support/users/ic3dclaudio/) - 3 - 3 - [3 years, 3 months ago](https://wordpress.org/support/topic/call-to-undefined-function-wcdrfc_fs/#post-16366820) - [ic3dclaudio](https://wordpress.org/support/users/ic3dclaudio/) * - [[PowerPress Podcasting plugin by Blubrry] Fatal error: Uncaught Error: Call to undefined function](https://wordpress.org/support/topic/fatal-error-uncaught-error-call-to-undefined-function-22/) - Started by: [yuppie77](https://wordpress.org/support/users/yuppie77/) - 1 - 1 - [3 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-call-to-undefined-function-22/#post-16028471) - [yuppie77](https://wordpress.org/support/users/yuppie77/) * - [[Jetpack - WP Security, Backup, Speed, & Growth] Fatal Error on PHP upgrade](https://wordpress.org/support/topic/fatal-error-on-php-upgrade/) - Started by: [SaladGoat](https://wordpress.org/support/users/saladgoat/) - 3 - 6 - [3 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-on-php-upgrade/#post-16331278) - [lastsplash (a11n)](https://wordpress.org/support/users/lastsplash/) * - [[W3 Total Cache] Uncaught Error: Call to undefined function wp_parse_url()](https://wordpress.org/support/topic/uncaught-error-call-to-undefined-function-wp_parse_url/) - Started by: [pawkat](https://wordpress.org/support/users/pawkat/) - 3 - 9 - [3 years, 6 months ago](https://wordpress.org/support/topic/uncaught-error-call-to-undefined-function-wp_parse_url/#post-16048171) - [aaronrobb](https://wordpress.org/support/users/aaronrobb/) * - [[WP Photo Album Plus] wppa_get_thumbs – undefined function](https://wordpress.org/support/topic/wppa_get_thumbs-undefined-function/) - Started by: [pfm](https://wordpress.org/support/users/pfm/) - 2 - 11 - [3 years, 8 months ago](https://wordpress.org/support/topic/wppa_get_thumbs-undefined-function/#post-15913587) - [Jacob N. Breetvelt](https://wordpress.org/support/users/opajaap/) * - [[Product page shipping calculator for WooCommerce] Call to undefined function is_product if WooCommerce not loaded](https://wordpress.org/support/topic/call-to-undefined-function-is_product-if-woocommerce-not-loaded/) - Started by: [jqz](https://wordpress.org/support/users/jqz/) - 3 - 4 - [4 years ago](https://wordpress.org/support/topic/call-to-undefined-function-is_product-if-woocommerce-not-loaded/#post-15543984) - [PI Web Solution](https://wordpress.org/support/users/rajeshsingh520/) * - [[Sucuri Security - Auditing, Malware Scanner and Security Hardening] E_ERROR in sucuri.php:2451 Call to undefined function mysql_real_escape_string()](https://wordpress.org/support/topic/e_error-in-sucuri-php2451-call-to-undefined-function-mysql_real_escape_string/) - Started by: [Peter Spung](https://wordpress.org/support/users/pspung/) - 2 - 4 - [4 years ago](https://wordpress.org/support/topic/e_error-in-sucuri-php2451-call-to-undefined-function-mysql_real_escape_string/#post-15553160) - [joshuahammer](https://wordpress.org/support/users/joshuahammer/) * - [[PPOM - Product Addons & Custom Fields for WooCommerce] Can’t access website – fatal error wp_get_current_use](https://wordpress.org/support/topic/cant-access-website-fatal-error-wp_get_current_use/) - Started by: [carlajesus](https://wordpress.org/support/users/carlarrj/) - 3 - 4 - [4 years, 6 months ago](https://wordpress.org/support/topic/cant-access-website-fatal-error-wp_get_current_use/#post-14884562) - [N-Media](https://wordpress.org/support/users/nmedia/) * - [[WP ADA Compliance Check Basic] Issue Saving Posts/Pages](https://wordpress.org/support/topic/issue-saving-posts-pages/) - Started by: [Kevin Pirnie](https://wordpress.org/support/users/kevp75/) - 2 - 5 - [4 years, 11 months ago](https://wordpress.org/support/topic/issue-saving-posts-pages/#post-14400072) - [seshelby](https://wordpress.org/support/users/seshelby/) * - [[Gallery by FooGallery] Critical error after update to v1.10.1](https://wordpress.org/support/topic/critical-error-after-update-to-v1-10-1/) [1](https://wordpress.org/support/topic/critical-error-after-update-to-v1-10-1/?output_format=md) [2](https://wordpress.org/support/topic/critical-error-after-update-to-v1-10-1/page/2/?output_format=md) - Started by: [erikggonc](https://wordpress.org/support/users/erikggonc/) - 5 - 21 - [5 years, 1 month ago](https://wordpress.org/support/topic/critical-error-after-update-to-v1-10-1/page/2/#post-14078195) - [erikggonc](https://wordpress.org/support/users/erikggonc/) * - [[Video & Photo Gallery for Ultimate Member] GalleryLite causing fatal error](https://wordpress.org/support/topic/gallerylite-causing-fatal-error/) - Started by: [kengholm](https://wordpress.org/support/users/kengholm/) - 2 - 4 - [5 years, 5 months ago](https://wordpress.org/support/topic/gallerylite-causing-fatal-error/#post-13660012) - [kengholm](https://wordpress.org/support/users/kengholm/) * - [[Responsive] error call to undefined function split()](https://wordpress.org/support/topic/error-call-to-undefined-function-split/) - Started by: [clairence](https://wordpress.org/support/users/clairence/) - 2 - 1 - [5 years, 5 months ago](https://wordpress.org/support/topic/error-call-to-undefined-function-split/#post-13546007) - [Prajakti Sahay](https://wordpress.org/support/users/prajakti/) * - [[Activity Log - Monitor & Record User Changes] Entire site crashes](https://wordpress.org/support/topic/entire-site-crashes/) - Started by: [wordcrunch](https://wordpress.org/support/users/wordcrunch/) - 1 - 0 - [5 years, 6 months ago](https://wordpress.org/support/topic/entire-site-crashes/) - [wordcrunch](https://wordpress.org/support/users/wordcrunch/) * - [[LearnPress - WordPress LMS Plugin for Create and Sell Online Courses] Error: Call to undefined function learn_press_get_education_themes()](https://wordpress.org/support/topic/error-call-to-undefined-function-learn_press_get_education_themes/) - Started by: [techwpdrift](https://wordpress.org/support/users/techwpdrift/) - 2 - 2 - [5 years, 11 months ago](https://wordpress.org/support/topic/error-call-to-undefined-function-learn_press_get_education_themes/#post-12700169) - [techwpdrift](https://wordpress.org/support/users/techwpdrift/) * - [[ajaira] wp_body_open() Error](https://wordpress.org/support/topic/wp_body_open-error/) - Started by: [jephmat](https://wordpress.org/support/users/jephmat/) - 2 - 1 - [5 years, 10 months ago](https://wordpress.org/support/topic/wp_body_open-error/#post-12973777) - [rakib8373](https://wordpress.org/support/users/rakib8373/) * - [[Reviews and Rating – Google Reviews] undefined function wp_date()](https://wordpress.org/support/topic/undefined-function-wp_date/) - Started by: [Carret](https://wordpress.org/support/users/carret/) - 2 - 2 - [6 years, 2 months ago](https://wordpress.org/support/topic/undefined-function-wp_date/#post-12334098) - [Noah Hearle](https://wordpress.org/support/users/designextreme/) * - [[Payment Plugins for Stripe WooCommerce] Fatal cURL version error after switching from test to live](https://wordpress.org/support/topic/fatal-curl-version-error-after-switching-from-test-to-live-2/) - Started by: [axisgrid](https://wordpress.org/support/users/axisgrid/) - 2 - 3 - [6 years, 3 months ago](https://wordpress.org/support/topic/fatal-curl-version-error-after-switching-from-test-to-live-2/#post-12287589) - [Clayton R](https://wordpress.org/support/users/mrclayton/) * - [[WooCommerce Stripe Payment Gateway] Fatal cURL version error after switching from test to live](https://wordpress.org/support/topic/fatal-curl-version-error-after-switching-from-test-to-live/) - Started by: [axisgrid](https://wordpress.org/support/users/axisgrid/) - 2 - 4 - [6 years, 3 months ago](https://wordpress.org/support/topic/fatal-curl-version-error-after-switching-from-test-to-live/#post-12290397) - [Joey – a11n](https://wordpress.org/support/users/jricketts4/) *   1 [2](https://wordpress.org/support/topic-tag/undefined-function/page/2/?output_format=md) [3](https://wordpress.org/support/topic-tag/undefined-function/page/3/?output_format=md)… [10](https://wordpress.org/support/topic-tag/undefined-function/page/10/?output_format=md) [11](https://wordpress.org/support/topic-tag/undefined-function/page/11/?output_format=md) [12](https://wordpress.org/support/topic-tag/undefined-function/page/12/?output_format=md) [→](https://wordpress.org/support/topic-tag/undefined-function/page/2/?output_format=md) ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics ## Feeds * [RSS Recent Posts](https://wordpress.org/support/forums/feed/) * [RSS Recent Topics](https://wordpress.org/support/topics/feed/)