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<?php $a = '7.1'; $b = '7.1' . str_repeat('0', 14) . '1'; print "$a\n$b\n"; var_dump($a==$b); $b = '7.1' . str_repeat('0', 15) . '1'; print "$b\n"; var_dump($a==$b);

preferences:
37.64 ms | 402 KiB | 5 Q