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run code in 300+ PHP versions simultaneously
<?php $text = "\s\n\t\s\s\n\t\s\n\s\s Hello\n\n\n\n\n\n\n\n\s\s\t\t\s\t Hello \s\s\n\n\n\t\s\s\s\n\t"; echo preg_replace('/\t+/', ' ',$text);

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