How to get parameter names from defined function

[DutchFish]

Dear develoopers,

I know i can reveal the defined functions with:

<?php
function myrow($id, $data) {
return "<tr><th>$id</th><td>$data</td></tr>\n";
}

$arr = get_defined_functions();

print_r($arr);
?>


But consider the next function:

<?php

function myfunction($para1, $para2, $para3) {
..
//do something with the paramaters
..
}
?>


How can I get the parameter names i.e. $para1, $para2, $para3?

Any help would be highly apreciated.

Kind regards,

DutchFish

[Janwillem Borleffs]

"DutchFish" <salesvast@home.nl> schreef in bericht
news:bsjnfn$ut1$1@news2.tilbu1.nb.home.nl...

>
> How can I get the parameter names i.e. $para1, $para2, $para3?
>

You can't, because they aren't important. The passed values are, and they
can be retrieved by using func_get_args:

[url]http://www.php.net/manual/en/function.func-get-args.php[/url]


JW

[CountScubula]

"DutchFish" <salesvast@home.nl> wrote in message
news:bsjnfn$ut1$1@news2.tilbu1.nb.home.nl...

> Dear develoopers,
>
> But consider the next function:
> <?php
> function myfunction($para1, $para2, $para3) {
> //do something with the paramaters
> }
> ?>
>
> How can I get the parameter names i.e. $para1, $para2, $para3?
> Any help would be highly apreciated.
> Kind regards,
> DutchFish

First, is your question, what is the name of the variables that were passed
to the function?
if so here you go, a little wierd, but I do it like this, (untill i can find
something better)

$myvar = "John Doe";
$othervar = "Jane";

someFunction($myvar,$othervar);

function someFunction($para1,$para2)
{
$v1 = array_search ($para1,$GLOBALS);
print "para1 came from var: $v1 \n";

$v2 = array_search ($para2,$GLOBALS);
print "para2 came from var: $v2 \n";

}

----- this is what it spits out

para1 came from var: myvar
para2 came from var: othervar



Mike Bradley
[url]http://gzen.myhq.info[/url] -- free online php tools

[DJP]

you can do it like this:

<?php

function myfunction($para1, $para2, $para3) {
foreach (get_defined_vars() as $name=>$value)
{
echo $name;
}
}
?>

[Unregistered]

You can't, because they aren't important. The passed values are, and they
can be retrieved by using func_get_args:

You can, and variable names can be important as they act as keys in the KVP structure of the language. See response #4 for the right answer.

[Unregistered]

'important' is a judgement call, no one cares what you think if you're not helping to answer the question.

Here's how:

$reflector = new ReflectionFunction('test');
$params = array();
foreach ($reflector->getParameters() as $param) {
$params[] = $param->name;
}
print_r($params);

http://stackoverflow.com/questions/3515406/how-to-determine-user-defined-function-parameters-names-before-calling-it