Calculation Error for POW

[MWWeilun]

For example:
echo((30000000000 + 90000000000)% pow(10, 11));
it gets result: -259084288

However, I got another result 20000000000 in https://onlinephp.io/

[glassmonkey]

thunks report

[nsfisis]

It is because the wasm binary that php playground internally uses is based on wasm32 spec, not wasm64. Running echo PHP_INT_MAX; on php playground shows 2147483647 not 9223372036854775807.