3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 10; echo "$a < ++$a vv"; $b = 11; if (10 < 11 || 11 < 12) print "hello"; else print "hi"; $a = 10; $b = 11; if ($a == ++$a && $b == ++$b) print "hello$a and $b"; else print "hi"; if (print "hi"; - 1) print "hello"
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.7
Parse error: syntax error, unexpected ';' in /in/NG4IE on line 19
Process exited with code 255.

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