[ciapug] yeah, weakly typed languages

[carl-olsen at mchsi.com]

It's taking a while for this to sink in.  The difference between the strings is that one is all numeric characters and the other is mixed.  Don't ask me why this makes a difference.  I'm just pointing it out and accepting that it explains the difference.

 -------------- Original message ----------------------
From: Barry Von Ahsen <barry at vonahsen.com>
>   echo "phpversion: ".phpversion()."<br>";
>   $a = "01234";
>   $b = "1234";
>   echo "a:". $a."<br>";
>   echo "b:". $b."<br>";
>   if($a == $b) { echo "a==b"; } else { echo "a!=b"; } echo "<br>";
>   if($a === $b) { echo "a===b"; } else { echo "a!==b"; } echo "<br>";
>   echo "gettype(a):". gettype($a)."<br>";
>   echo "gettype(b):". gettype($b)."<br>";
> 
>   $c = "0foo";
>   $d = "foo";
>   echo "c:". $c."<br>";
>   echo "d:". $d."<br>";
>   if($c == $d) { echo "c==d"; } else { echo "c!=d"; } echo "<br>";
>   if($c === $d) { echo "c===d"; } else { echo "c!==d"; } echo "<br>";
> 
> output:
> phpversion: 4.4.0
> a:01234
> b:1234
> a==b
> a!==b
> gettype(a):string
> gettype(b):string
> c:0foo
> d:foo
> c!=d
> c!==d
> 
> I totally understand why "01234"==1234, but not why "01234"=="1234".  If 
> I'm doing string=>string, no conversion should happen.  However, if it 
> does, why doesn't "0foo"=>0 and "foo"=>0 so "0foo"=="foo" also?!?
> 
> -barry
> 
> 
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