Type casting and Comparison with Loose Operator “==”

Question

I have a problem baffling me terribly. I noticed this before but didn\'t give it any heed until today. I was trying to write my own check for integer strings. I know of

Answer 1

According to php.net http://php.net/manual/en/language.operators.comparison.php:

var_dump(0 == "a"); // 0 == 0 -> true

So, I think it is juggling the types, and actually casting both sides to int. Then comparing either the sum of the ascii values or the ascii values of each respective index in the string.