1.2.1661. version_compare Operator

version_compare()’s third argument is checked for value. The third argument specifies the operator, which may be only one of the following : <, lt, <=, le, >, gt, >=, ge, ==, =, eq, !=, <>, ne. The operator is case sensitive.

Until PHP 8.1, it was silently reverted to the default value. It is a deprecated warning in PHP 8.1 and will be finalized in PHP 9.0. It is recommended to fix this parameter in any PHP version.

<?php

// return true
var_dump(version_compare('2.0', '2.1', '<'));

// returns false
var_dump(version_compare('2.0', '2.1', '>'));

// returns NULL and might be interpreted as false
var_dump(version_compare('2.0', '2.1', 'as'));

?>

1.2.1661.1. Related PHP errors

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

1.2.1661.1.1. Suggestions

• Use a valid comparison operator

1.2.1661.1.2. Specs

Short name	Php/VersionCompareOperator
Rulesets	All, Analyze, Changed Behavior, CompatibilityPHP81, CompatibilityPHP82
Exakat since	2.3.1
PHP Version	With PHP 8.1 and more recent
Severity	Minor
Time To Fix	Quick (30 mins)
Precision	High
Available in	Entreprise Edition, Exakat Cloud