[ciapug] yeah, weakly typed languages

[Barry Von Ahsen]

=== is in 4, it's my second test for a===b

-barry


Dave J. Hala Jr. wrote:
> I *think* I saw that in reference to php 5  or soon to be  php 6
> somewhere...
> 
> On Wed, 2007-04-04 at 11:36, carl-olsen at mchsi.com wrote:
>> I have never used this, but isn't "===" a function that might solve this?
>>
>> I think "==" is equality, and "===" is absolute equality.
>>
>> Carl
>>
>>  -------------- 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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