3v4l.org

run code in 500+ PHP versions simultaneously
<?php $GLOBALS['wp_version'] = '6.1-alpha-53344-src'; $current_version = substr( $GLOBALS['wp_version'], 0, 3 ); var_dump( $current_version ); $current_version = (float) $current_version - 0.1; var_dump( $current_version ); $latest_stable = sprintf( '%s.x', $current_version ); var_dump( $latest_stable );
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
string(3) "6.1" float(6) string(3) "6.x"
preferences:
103.11 ms | 1241 KiB | 4 Q