3v4l.org

run code in 300+ PHP versions simultaneously
<?php // Source: https://bugs.php.net/bug.php?id=61225 var_dump(0b0+1); $a = 0b0; $a += 1; print 0b0+1; print '\n'; print $a;

preferences:
35.23 ms | 402 KiB | 5 Q