for(var i in aArray) VS for(i=0; i<aArray.length; i++)

Question

I just want to ask if the in_array_orig and in_array_new is just the same. and also im confused on the result when comparing both array (<

Answer 1

To your first question, pls refer http://www.openjs.com/articles/for_loop.php

About the second:

echo(in_array_orig(24, a)); // true
echo(in_array_new(24, b)); // true

I think this won't be a problem to you.

echo(in_array_orig(aArr2, b));
echo(in_array_new(aArr2, b));

Both of these would definitely be false, becuz they are no where inside b. If you make a small change in b:

var b = {0:aArr1, 1:24, 2:'manila', 3:[1]};

then try this:

console.log(in_array_new(aArr2, b[3]));
console.log(in_array_orig(aArr2, b[3]));

they are both True now.

Finally, the last:

echo ((aArr1==aArr2));

"==" operator compares their value, so this is false because they clearly bears different content, meaning value.

echo ((aArr1===aArr2));

"===" compares their value and type, their values are different but their types are the same, you can check it by:

console.log(typeof aArr1===typeof aArr2);

thus it is still a False.