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run code in 200+ php & hhvm versions
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<?php $a = "999999999999999999999999999999999999999999999999999999999999999999999999999"; var_dump($a);
Output for 4.3.0 - 7.3.0rc4
string(75) "999999999999999999999999999999999999999999999999999999999999999999999999999"