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run code in 200+ php & hhvm versions
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<?php $a = array(0 => 0); $b = array(0x100000000 => 0); var_dump($a === $b);
based on Sjdf8
Output for 5.4.44 - 5.4.45, 5.5.27 - 5.5.35, 5.6.11 - 7.2.0
bool(false)
Output for 5.3.19 - 5.4.43, 5.5.24 - 5.5.26, 5.6.8 - 5.6.10
bool(true)