[PHP] PHP5 Type Hints

[Gerard Samuel]

Im unable to find documentation on this.
Does one exist?  If so can you point me to it.
Thanks...
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Re: [PHP] PHP5 Type Hints

[Curt Zirzow]

* Thus wrote Gerard Samuel:
 Im unable to find documentation on this.
 Does one exist?  If so can you point me to it.

I dont think anything officially exist in the manual, yet. The type
hint can only be an Object, and will cause a fatal error if not the
paticular object isn't passed.

class Foo { };

function bar(Foo $foo) { }
  

$a = new Foo();
foo($a); 


foo('a string'); // Fatal Error


The most useful use with type hinting can/is used is with
exceptions. The catch() requires a type hint of what class of
exception to catch:

try {
  some_code();
}
catch (CustomException $e) {
}
catch (Exception $e) { // if CustomException isn't thrown
}

Curt
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Re: [PHP] PHP5 Type Hints

[Gerard Samuel]

Curt Zirzow wrote:
* Thus wrote Gerard Samuel:
Im unable to find documentation on this.
Does one exist?  If so can you point me to it.

I dont think anything officially exist in the manual, yet. The type
hint can only be an Object, and will cause a fatal error if not the
paticular object isn't passed.
Thanks.  I could have sworn, I saw something somewhere,
that led me to believe that arguments can be casted.
I.E.
function foo(int $foo)
{
// $foo will be casted as an integer
}
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Re: [PHP] PHP5 Type Hints

[Aidan Lister]

Hi Gerald,

If you did see something like that, it was a mistake in our manual :)

I've documented typehinting now, though it will take a while to show up in 
the manual.
http://php.net/language.oop5.typehinting

Kind Regards,
Aidan


Gerard Samuel [EMAIL PROTECTED] wrote in message 
news:[EMAIL PROTECTED]
 Curt Zirzow wrote:
 * Thus wrote Gerard Samuel:

Im unable to find documentation on this.
Does one exist?  If so can you point me to it.


 I dont think anything officially exist in the manual, yet. The type
 hint can only be an Object, and will cause a fatal error if not the
 paticular object isn't passed.


 Thanks.  I could have sworn, I saw something somewhere,
 that led me to believe that arguments can be casted.
 I.E.
 function foo(int $foo)
 {
 // $foo will be casted as an integer
 } 

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Re: [PHP] PHP5 Type Hints

[Gerard Samuel]

Aidan Lister wrote:
Hi Gerald,
If you did see something like that, it was a mistake in our manual :)
I've documented typehinting now, though it will take a while to show up in 
the manual.
http://php.net/language.oop5.typehinting

It may have been Example 18-23 at 
http://us2.php.net/manual/en/language.oop5.exceptions.php
Thanks for updating the manual...

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