arguments from function

[iulian.ilea]

Hey,

I try to explain what is "arguments from function" :)

So... if I have a function (i.e. function me($param1, $param2)). It is
possible to call me($param1)? Like in JavaScript.

[friglob]

Re: arguments from function

iulian.ilea wrote:

Hey,
>
I try to explain what is "arguments from function" :)
>
So... if I have a function (i.e. function me($param1, $param2)). It is
possible to call me($param1)? Like in JavaScript.
>

yes, if you have some default $param2 value defined in the function
predefined argument values always must be after arguments that don`t have predefined values

function me ( $param1 , $param2 = null ) { ... }
function me ( $param1 , $param2 = 123 ) { ... }
function me ( $param1 , $param2 = "word" ) { ... }

[Erwin Moller]

Re: arguments from function

iulian.ilea wrote:

Hey,
>
I try to explain what is "arguments from function" :)
>
So... if I have a function (i.e. function me($param1, $param2)). It is
possible to call me($param1)? Like in JavaScript.

Hi

I am not 100% sure I understand what you want, but this may be relevant:

You can use defaultvalues in the function like this:

function testFunc($arg1, $arg2='test',$a rg3=false){
...
}

If you call testFunc like this:

testFunct(23,'J oe');

In testFunct the following values are used:
$arg1 <- 23 (passed by calling of the function)
$arg2 <- 'Joe' (passed by calling of the function)
$arg3 <- false. Defaults to the value you defined in the function.

Does that help?

Regards,
Erwin Moller

[iulian.ilea]

Re: arguments from function

Yes, this is what i want: to call a function (defined with 3 params)
using only 2, or 1. So i must use some default values. Thank you!
Erwin Moller wrote:

iulian.ilea wrote:
>

Hey,

I try to explain what is "arguments from function" :)

So... if I have a function (i.e. function me($param1, $param2)). It is
possible to call me($param1)? Like in JavaScript.

>
Hi
>
I am not 100% sure I understand what you want, but this may be relevant:
>
You can use defaultvalues in the function like this:
>
function testFunc($arg1, $arg2='test',$a rg3=false){
...
}
>
If you call testFunc like this:
>
testFunct(23,'J oe');
>
In testFunct the following values are used:
$arg1 <- 23 (passed by calling of the function)
$arg2 <- 'Joe' (passed by calling of the function)
$arg3 <- false. Defaults to the value you defined in the function.
>
Does that help?
>
Regards,
Erwin Moller

[iulian.ilea]

Re: arguments from function

Me, back again with another question about function:
if I have this function me($param1, $param2=null, $param3,
$param5=null, $param6=null) how can I found how many parameters are
send in function when the function is called?
i.e.: me($masa,null,$ oiu,$doiu,null, $noidoi)
I want to know if it exists a function that does this.

[Juliette]

Re: arguments from function

iulian.ilea wrote:

Me, back again with another question about function:
if I have this function me($param1, $param2=null, $param3,
$param5=null, $param6=null) how can I found how many parameters are
send in function when the function is called?
i.e.: me($masa,null,$ oiu,$doiu,null, $noidoi)
I want to know if it exists a function that does this.
>

func_num_args()

http://www.php.net/function.func_num_args

[Alvaro G. Vicario]

Re: arguments from function

*** iulian.ilea escribió/wrote (15 Sep 2006 06:56:29 -0700):

Me, back again with another question about function:
if I have this function me($param1, $param2=null, $param3,
$param5=null, $param6=null) how can I found how many parameters are
send in function when the function is called?

You cannot do that, not even in JavaScript. There'd be no way to know which
ones of the provided values match each argument names. From manual:

"Note that when using default arguments, any defaults should be on the
right side of any non-default arguments; otherwise, things will not work as
expected."



--
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++ Mi sitio sobre programación web: http://bits.demogracia.com
+- Mi web de humor con rayos UVA: http://www.demogracia.com
--

[iulian.ilea]

Re: arguments from function

In JavaScript, if I have func(var1,var2, var3) it is possible to call
func("valueone" ) or func("valueone" ,"valuetwo") . Ofcourse that value1
and valuetwo ar assigne to var1 and var2. If a third parameter is sent
this is assigned to var3.

Alvaro G. Vicario wrote:

*** iulian.ilea escribió/wrote (15 Sep 2006 06:56:29 -0700):

Me, back again with another question about function:
if I have this function me($param1, $param2=null, $param3,
$param5=null, $param6=null) how can I found how many parameters are
send in function when the function is called?

>
You cannot do that, not even in JavaScript. There'd be no way to know which
ones of the provided values match each argument names. From manual:
>
"Note that when using default arguments, any defaults should be on the
right side of any non-default arguments; otherwise, things will not work as
expected."
>
>
>
--
-+ http://alvaro.es - Álvaro G. Vicario - Burgos, Spain
++ Mi sitio sobre programación web: http://bits.demogracia.com
+- Mi web de humor con rayos UVA: http://www.demogracia.com
--

[Alvaro G. Vicario]

Re: arguments from function

*** iulian.ilea escribió/wrote (15 Sep 2006 15:36:17 -0700):

In JavaScript, if I have func(var1,var2, var3) it is possible to call
func("valueone" ) or func("valueone" ,"valuetwo") . Ofcourse that value1
and valuetwo ar assigne to var1 and var2. If a third parameter is sent
this is assigned to var3.

Right, but you cannot assign var1 and var3 but not var2, as you suggest:

function me($param1, $param2=null, $param3,
$param5=null, $param6=null)



--
-+ http://alvaro.es - Álvaro G. Vicario - Burgos, Spain
++ Mi sitio sobre programación web: http://bits.demogracia.com
+- Mi web de humor con rayos UVA: http://www.demogracia.com
--

[iulian.ilea]

Re: arguments from function

No, but I can do this: me($p1, null, $p3).

Alvaro G. Vicario wrote:

*** iulian.ilea escribió/wrote (15 Sep 2006 15:36:17 -0700):

In JavaScript, if I have func(var1,var2, var3) it is possible to call
func("valueone" ) or func("valueone" ,"valuetwo") . Ofcourse that value1
and valuetwo ar assigne to var1 and var2. If a third parameter is sent
this is assigned to var3.

>
Right, but you cannot assign var1 and var3 but not var2, as you suggest:
>
function me($param1, $param2=null, $param3,
$param5=null, $param6=null)
>
>
>
--
-+ http://alvaro.es - Álvaro G. Vicario - Burgos, Spain
++ Mi sitio sobre programación web: http://bits.demogracia.com
+- Mi web de humor con rayos UVA: http://www.demogracia.com
--

[Jerry Stuckle]

Re: arguments from function

iulian.ilea wrote:

>>*** iulian.ilea escribió/wrote (15 Sep 2006 15:36:17 -0700):
>>

>>>In JavaScript, if I have func(var1,var2, var3) it is possible to call
>>>func("valueo ne") or func("valueone" ,"valuetwo") . Ofcourse that value1
>>>and valuetwo ar assigne to var1 and var2. If a third parameter is sent
>>>this is assigned to var3.

>>
>>Right, but you cannot assign var1 and var3 but not var2, as you suggest:
>>
>>function me($param1, $param2=null, $param3,
>>$param5=nul l, $param6=null)
>>
>>
>>
>>--
>>-+ http://alvaro.es - Álvaro G. Vicario - Burgos, Spain
>>++ Mi sitio sobre programación web: http://bits.demogracia.com
>>+- Mi web de humor con rayos UVA: http://www.demogracia.com
>>--

>
>
No, but I can do this: me($p1, null, $p3).
>
Alvaro G. Vicario wrote:
>

(Top posting fixed)

Yes, but that passes null as the second argument, which is different
from taking the default value for the parameter.

P.S. Please don't top post.

--
=============== ===
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