PHP version_compare Argument #3 ($operator) must be a valid comparison

[kseones]

Uncaught ValueError: version_compare(): Argument #3 ($operator) must be a valid comparison in /library/Zend/Xml/Security.php:172

    $isVulnerableVersion = (
        version_compare(PHP_VERSION, '5.5.22', 'lt')
        || (
            version_compare(PHP_VERSION, '5.6', 'ge')
            && version_compare(PHP_VERSION, '5.6.6', 'lt')
        )
    );

In PHP 8.1, the version_compare() function is made more strict with the operator parameter.

In PHP 8.0, this was made to throw a ValueError exception if an unknown parameter was passed, as part of the internal function exception handling changes.

In PHP 8.1, this is further restricted to disallow partial values for operator parameter.

version_compare(1, 2, '');
version_compare(1, 2, '!');
version_compare(1, 2, 'g');
version_compare(1, 2, 'l');
version_compare(1, 2, 'n');

All of the statements above are were allowed in PHP 8.0, and are no longer allowed in PHP 8.1. These values are undocumented values from the documentation.

Please see here: https://php.watch/versions/8.1/version_compare-operator-restrictions

It seems that all other version_compare functions are ok but only not in Security.php and ControllerTestCase.php:

grep -r "version_compare" library/Zend/*
library/Zend/Barcode/Renderer/Image.php: if (version_compare(PHP_VERSION, '8.1.0', '>=')) {
library/Zend/Db/Adapter/Oracle.php: if (($version === null) || version_compare($version, '9.0.0', '>=')) {
library/Zend/Db/Adapter/Pdo/Mysql.php: && version_compare(PHP_VERSION, '5.3.6', '<')
library/Zend/Db/Adapter/Pdo/Oci.php: if (($version === null) || version_compare($version, '9.0.0', '>=')) {
library/Zend/Loader/AutoloaderFactory.php: if (version_compare(PHP_VERSION, '5.3.7', '>=')) {
library/Zend/Loader/Autoloader.php: uksort($versions, 'version_compare');
library/Zend/Loader/StandardAutoloader.php: if (version_compare(PHP_VERSION, '5.3.2', '>=')) {
library/Zend/Log/Filter/Priority.php: return version_compare($event['priority'], $this->_priority, $this->_operator);
library/Zend/Mobile/Push/Message/Gcm.php: if (version_compare(PHP_VERSION, '5.4.0') >= 0) {
library/Zend/Mobile/Push/Apns.php: if (version_compare(PHP_VERSION, '5.4.0') >= 0) {
library/Zend/Pdf/Parser.php: if (version_compare($pdfVersion, '0.9', '<') ||
library/Zend/Pdf/Parser.php: version_compare($pdfVersion, '1.61', '>=')
library/Zend/Pdf.php: if ($root->Version !== null && version_compare($root->Version->value, $pdfHeaderVersion, '>')) {
library/Zend/Pdf.php: $versionIs_1_2_plus = version_compare($root->Version->value, '1.1', '>');
library/Zend/Pdf.php: $versionIs_1_2_plus = version_compare($pdfHeaderVersion, '1.1', '>');
library/Zend/Service/LiveDocx.php: return version_compare($version, $this->getVersion());
library/Zend/Stdlib/CallbackHandler.php: $isPhp54 = version_compare(PHP_VERSION, '5.4.0rc1', '>=');
library/Zend/Test/PHPUnit/ControllerTestCase.php: if (version_compare(PHPUnit_Runner_Version::id(), '3.3.0', 'lt')) {
library/Zend/Test/PHPUnit/ControllerTestCase.php: } elseif (version_compare(PHPUnit_Runner_Version::id(), '3.3.3', 'lt')) {
library/Zend/Test/PHPUnit/Constraint/Redirect.php:if (version_compare(PHPUnit_Runner_Version::id(), '4.1', '>=')) {
library/Zend/Test/PHPUnit/Constraint/Redirect.php:} elseif (version_compare(PHPUnit_Runner_Version::id(), '3.5', '>=')) {
library/Zend/Test/PHPUnit/Constraint/ResponseHeader.php:if (version_compare(PHPUnit_Runner_Version::id(), '4.1', '>=')) {
library/Zend/Test/PHPUnit/Constraint/ResponseHeader.php:} elseif (version_compare(PHPUnit_Runner_Version::id(), '3.5', '>=')) {
library/Zend/Test/PHPUnit/Constraint/DomQuery.php:if (version_compare(PHPUnit_Runner_Version::id(), '4.1', '>=')) {
library/Zend/Test/PHPUnit/Constraint/DomQuery.php:} elseif (version_compare(PHPUnit_Runner_Version::id(), '3.5', '>=')) {
library/Zend/Version.php: return version_compare($version, strtolower(self::VERSION));
library/Zend/Wildfire/Plugin/FirePhp.php: if (version_compare(PHP_VERSION, '7.0.0', '>=')) {
library/Zend/Xml/Security.php: version_compare(PHP_VERSION, '5.5.22', 'lt')
library/Zend/Xml/Security.php: version_compare(PHP_VERSION, '5.6', 'ge')
library/Zend/Xml/Security.php: && version_compare(PHP_VERSION, '5.6.6', 'lt')