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run code in 300+ PHP versions simultaneously
<?php $var1=rand(); $var2=uniqid($var1); $var3=uniqid($var1); $var4=md5($var2); $var5=md5($var3); echo $var1 . "</br>"; echo $var2 . "</br>"; echo $var3 . "</br>"; echo $var4 . "</br>"; echo $var5 . "</br>";

preferences:
31.78 ms | 402 KiB | 5 Q