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run code in 200+ php & hhvm versions
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<?php $name = 'SlimDuct 78" x 2-3/4" Ivory Length of Line Set Ducting SD77I'; $str = strtolower(trim(preg_replace('/[^a-zA-Z0-9]+/', '-', $name), '-')); echo $str. "\n"; ?>
Output for 4.3.0 - 7.2.0
slimduct-78-x-2-3-4-ivory-length-of-line-set-ducting-sd77i