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run code in 200+ php & hhvm versions
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<?php var_dump("\e"); var_dump("hello\n"); ?>
based on d3qYN
Output for 5.4.0 - 7.2.0
string(1) "" string(6) "hello "
Output for 4.3.0 - 5.3.29
string(2) "\e" string(6) "hello "