javascript - Why do I get the wrong id somewhere, somehow? -

okay so, source code.

var newrealid = <? print($_session["mysteamid"]) ?>; alert("my id = " + <? print($_session["mysteamid"]) ?>);

and when inspect site or view source code following code

var newrealid = 76561198061310076; alert(76561198061310076);

which correct output, however, alert box visually in chrome is:

my id = 76561198061310080

i have absolutely no idea , i've been stuck here ages..

the issue because value you're using beyond max_safe_integer js allows:

console.log(76561198061310076);  console.log(number.max_safe_integer)

due number coerced floating point , again. in turn introduces rounding errors, accounts discrepancy see in result.

assuming don't need use mathematical operations on value, convert string in output:

var newrealid = '<? print($_session["mysteamid"]) ?>';

Brent