Online PHP editor | output for D63Bt

<?php function is_wp_version_compatible( $required ) { $wp_version = '6.4.1'; // Strip off any -alpha, -RC, -beta, -src suffixes. list( $version ) = explode( '-', $wp_version ); if ( is_string( $required ) && substr_count( $required, '.' ) > 2 && str_ends_with( $required, '.0' ) ) { wp_trigger_error( __FUNCTION__, "`{$required}` is not a valid WordPress version string.", E_USER_NOTICE ); $required = rtrim( $required, '.0' ); echo $required . "\n"; } return empty( $required ) || version_compare( $version, $required, '>=' ); } echo is_wp_version_compatible('6.4'); echo is_wp_version_compatible('3.0'); echo is_wp_version_compatible('3.0.0'); echo is_wp_version_compatible('6.4.1');