Every usage of PHP SPL constants causes an UndefinedConstant-ERROR in Psalm.

Example

curl_setopt_array($curl, [
				CURLOPT_URL				=> 'https://HIDDEN',
				CURLOPT_RETURNTRANSFER	=> true,
				CURLOPT_ENCODING		=> '',
				CURLOPT_MAXREDIRS		=> 10,
				CURLOPT_TIMEOUT			=> 30,
				CURLOPT_HTTP_VERSION	=> CURL_HTTP_VERSION_1_1,
				CURLOPT_CUSTOMREQUEST	=> 'POST',
				CURLOPT_POSTFIELDS		=> '{HIDDEN}',
		]);

causes

ERROR: UndefinedConstant - src/models/HIDDEN.php:59:5 - Const CURLOPT_URL is not defined (see https://psalm.dev/020) CURLOPT_URL => 'https://HIDDEN',

ERROR: UndefinedConstant - src/models/HIDDEN.php:60:5 - Const CURLOPT_RETURNTRANSFER is not defined (see https://psalm.dev/020) CURLOPT_RETURNTRANSFER => true,

Discussion

These constants are officially maintained by PHP. For OpenSSL, I did not even actively enable it in my PHP.ini, which uses mostly default settings. For LDAP I can understand the missing support, because it needs to be enabled manually. But even when I try to enable e.g. ldap in my Psalm-configuration via , I get an error ("[...]The value 'ldap' is not an element of the set[...]").

Setup

Psalm: Version 5.4.0 PHP: 8.2.1 (Modules: bcmath, calendar, Core, ctype, date, dom, filter, hash, iconv, json, libxml, mbstring, mysqli, mysqlnd, odbc, pcre, PDO, Phar, random, readline, Reflection, session, SimpleXML, SPL, standard, tokenizer, xml, xmlreader, xmlwriter, zlib)

Others

Other constants, which cause an ERROR:

• CURL*-constants - see https://www.php.net/manual/en/curl.constants.php
• LDAP_*-constants - see https://www.php.net/manual/en/ldap.constants.php
• OPENSSL_*-constants - see https://www.php.net/manual/en/openssl.constants.php