3v4l.org

run code in 300+ 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.4.16, 8.5.0 - 8.5.1
string(3) "6.1" float(6) string(3) "6.x"
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
preferences:
165.67 ms | 407 KiB | 5 Q