为什么FALSE类型变为空字符串而TRUE的类型变为“1”？

Question

Couldn't the string representation of FALSE be "0", just like TRUE is juggled to "1"?

From the manual:

A boolean TRUE value is converted to the string "1". Boolean FALSE is converted to "" (the empty string). This allows conversion back and forth between boolean and string values.

What do they mean by "allows conversion back and forth between boolean and string values". So TRUE does not allow that ?

CAn you explain that and give some examples please ?

NOTE: I Know there are other related questions, but none of them provided what i'm precisely looking for!! So don't bother copying a link!!

Answer 1

Examine the following code:

var_dump("0" == false.""); // bool(false)
var_dump(""  == false.""); // bool(true)

If false would be represented as "0", the given comparison would be false as "0" != "". This is the reason why false is represented as "" instead of "0", providing back conversion.