__autoload() is no longer supported
PHP Fatal error: __autoload() is no longer supported, use spl_autoload_register() instead in /var/www/html/wp-includes/compat.php on line 502
// SPL can be disabled on PHP 5.2 if ( ! function_exists( 'spl_autoload_register' ) ): ... endif;
if～endif; を削除
I fixed it replacing:
function __autoload( $classname ) { ... }by
function spl_autoload_register( $classname ) { ... }
Call to undefined function create_function()
PHP Fatal error: Uncaught Error: Call to undefined function create_function() in /var/www/html/wp-includes/pomo/translations.php:208
wp-includes/pomo/plural-forms.php を導入
https://github.com/WordPress/WordPress/commit/0a3b7d8e31def538cf531791efe8bf33e6e243cc
Call to undefined function get_magic_quotes_gpc()
wp-includes/formatting.php
wp-includes/load.php
get_magic_quotes_gpc() を使ってる部分をコメントアウトする（３箇所）
wp-cli 動くようになる
404
wp-includes/class-wp-query.php
The kernel has a method that is called at each request: \WP_Query::parse_query. It contains the lines
if ( ! is_scalar( $qv['p'] ) || $qv['p'] < 0 ) { $qv['p'] = 0; $qv['error'] = '404'; ...In most cases $qv['p'] contains an empty line, which causes if to trigger and set the 404 error.
In WordPress 5.6 the comparison line looks like this:if ( ! is_scalar( $qv['p'] ) || (int) $qv['p'] < 0 ) {This fixes the problem in PHP 8 and works correctly in all versions of PHP.
Why WordPress 5.5.3 with PHP 8 shows 404 on every page? - KAGG
