3v4l.org

run code in 300+ PHP versions simultaneously
<?php $v0 = '5.6.3RC1'; foreach(array('5.6.2', '5.6.3RC', '5.6.3RC1', '5.6.3RC2', '5.6.3') as $v) { echo "$v vs $v0=", version_compare($v, $v0), "\n"; }

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