32-bit system left overflow, 64-bit system does not overflow, can retain 32 left overflow results in 64-bit system

echo 83661<<15;//32 System results: 1553563648

echo 83661<<15;//64 System results: 2741403648

Want to keep 32 overflow result in 64-bit system, ask how to do, little brother think not understand, ask you big.

Reply to discussion (solution)

$n = 83661<<15;printf ("Signed:%d unsigned:%u binary:%032b", $n, $n, $n);

Signed:-1553563648 unsigned: 27,414,036,482 binary: 10100011011001101000000000000000

$n = 83661<<15;printf ("Signed:%d unsigned:%u binary:%032b", $n, $n, $n);

Signed:-1553563648 unsigned: 27,414,036,482 binary: 10100011011001101000000000000000

Big Hello, in 64 the machine carried out under.

$n = 83661<<15;printf ("%d", $n);//The result is still 2741403648.

Don't you get it?
They're one thing.

Don't you get it?
They're one thing.

Big, can pass
$n = 83661<<15;
Get this value on a 64-bit machine: 1553563648

echo  2741403648-0x100000000;

-1553563648

echo  2741403648-0x100000000;

-1553563648

Thank you greatly, my problem solved.
Displacement problem is not very familiar, we have to cram this knowledge.

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