wp-includes/functions.php:8901Checks compatibility with the current WordPress version.
$requiredstringboolfunction is_wp_version_compatible( $required ) { if ( defined( 'WP_RUN_CORE_TESTS' ) && WP_RUN_CORE_TESTS && isset( $GLOBALS['_wp_tests_wp_version'] ) ) { $wp_version = $GLOBALS['_wp_tests_wp_version']; } else { $wp_version = wp_get_wp_version(); } // Strip off any -alpha, -RC, -beta, -src suffixes. list( $version ) = explode( '-', $wp_version ); if ( is_string( $required ) ) { $trimmed = trim( $required ); if ( substr_count( $trimmed, '.' ) > 1 && str_ends_with( $trimmed, '.0' ) ) { $required = substr( $trimmed, 0, -2 ); } } return empty( $required ) || version_compare( $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.