run code in 200+ php & hhvm versions
Bugs & Features
<?php $str1= '082307'; echo substr(chunk_split($str1, 2, ':')); ?> - See more at: http://www.w3resource.com/php-exercises/php-string-exercises.php#sthash.bzfnf2JW.dpuf
based on B5Rc7

Shows result from various feature-branches currently under review from the php developers. Contact me to have additional branches featured.

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Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page