PHP Warning: Array to string conversion in /class-linkbacks-mf2-handler.php

[edent]

Since upgrading to PHP 8.1, I've noticed a couple of these warnings popping up:

PHP Warning: Array to string conversion in /blog/wp-content/plugins/semantic-linkbacks/includes/class-linkbacks-mf2-handler.php on line 354

https://github.com/pfefferle/wordpress-semantic-linkbacks/blob/a164a3ddb11dc58a58bb19477732ebacb4e85915/includes/class-linkbacks-mf2-handler.php#L354

[edent]

Also seeing

PHP Warning: Undefined array key "type" in /blog/wp-content/plugins/semantic-linkbacks/includes/class-linkbacks-mf2-handler.php on line 454

And

PHP Fatal error: Uncaught TypeError: trim(): Argument #1 ($string) must be of type string, array given in /blog/wp-content/plugins/semantic-linkbacks/includes/class-linkbacks-mf2-handler.php:185

[edent]

PHP Warning: Attempt to read property "comment_ID" on null in /blog/wp-content/plugins/semantic-linkbacks/includes/class-linkbacks-handler.php on line 421

https://github.com/pfefferle/wordpress-semantic-linkbacks/blob/a164a3ddb11dc58a58bb19477732ebacb4e85915/includes/class-linkbacks-handler.php#L421

[bdeshi]

getting a fatal error. cc @pfefferle

semantic-linkbacks v3.12.0 wordpress v6.1.1 php 8.1.14

[05-Feb-2023 18:16:08 UTC] PHP Fatal error:  Uncaught TypeError: array_intersect(): Argument #2 must be of type array, string given in /bitnami/wordpress/wp-content/plugins/semantic-linkbacks/includes/class-linkbacks-mf2-handler.php:592
Stack trace:
#0 /bitnami/wordpress/wp-content/plugins/semantic-linkbacks/includes/class-linkbacks-mf2-handler.php(592): array_intersect()
#1 /bitnami/wordpress/wp-content/plugins/semantic-linkbacks/includes/class-linkbacks-mf2-handler.php(164): Linkbacks_MF2_Handler::get_representative_entry()
#2 /opt/bitnami/wordpress/wp-includes/class-wp-hook.php(308): Linkbacks_MF2_Handler::generate_commentdata()
#3 /opt/bitnami/wordpress/wp-includes/plugin.php(205): WP_Hook->apply_filters()
#4 /bitnami/wordpress/wp-content/plugins/semantic-linkbacks/includes/class-linkbacks-handler.php(202): apply_filters()
#5 /opt/bitnami/wordpress/wp-includes/class-wp-hook.php(308): Linkbacks_Handler::enhance()
#6 /opt/bitnami/wordpress/wp-includes/plugin.php(205): WP_Hook->apply_filters()
#7 /opt/bitnami/wordpress/wp-includes/comment.php(2563): apply_filters()
#8 /bitnami/wordpress/wp-content/plugins/webmention/includes/class-webmention-receiver.php(375): wp_update_comment()
#9 /opt/bitnami/wordpress/wp-includes/rest-api/class-wp-rest-server.php(1171): Webmention_Receiver::post()
#10 /opt/bitnami/wordpress/wp-includes/rest-api/class-wp-rest-server.php(1018): WP_REST_Server->respond_to_request()
#11 /opt/bitnami/wordpress/wp-includes/rest-api/class-wp-rest-server.php(442): WP_REST_Server->dispatch()
#12 /opt/bitnami/wordpress/wp-includes/rest-api.php(410): WP_REST_Server->serve_request()
#13 /opt/bitnami/wordpress/wp-includes/class-wp-hook.php(308): rest_api_loaded()
#14 /opt/bitnami/wordpress/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters()
#15 /opt/bitnami/wordpress/wp-includes/plugin.php(565): WP_Hook->do_action()
#16 /opt/bitnami/wordpress/wp-includes/class-wp.php(399): do_action_ref_array()
#17 /opt/bitnami/wordpress/wp-includes/class-wp.php(780): WP->parse_request()
#18 /opt/bitnami/wordpress/wp-includes/functions.php(1332): WP->main()
#19 /opt/bitnami/wordpress/wp-blog-header.php(16): wp()
#20 /opt/bitnami/wordpress/index.php(17): require('...')
#21 {main}
  thrown in /bitnami/wordpress/wp-content/plugins/semantic-linkbacks/includes/class-linkbacks-mf2-handler.php on line 592

[dshanske]

Plugin scheduled for retirement in favor of a merge with Webmention in v5.0 very soon