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run code in 300+ PHP versions simultaneously
<?php $string = "Porcupines\nare\n\n\n\nporcupiney."; echo preg_replace('/(\r|\n|\r\n){2,}/', '<br/><br/>', $string);

Generated using Vulcan Logic Dumper, using php 8.0.0


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43.82 ms | 1481 KiB | 4 Q