wp-includes/functions.php:8934Checks compatibility with the current PHP version.
$requiredstringboolfunction is_php_version_compatible( $required ) { return empty( $required ) || version_compare( PHP_VERSION, $required, '>=' );}Introduced in 5.2.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/functions.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.