将函数参数列表转换为数组

Question

I'm working on a CMS, and I'm looking for a way to convert a list of function arguments, into an array. For example:

function testfunction($param1, $param2){
$string = "Param1: $param1  Param2: $param2";
return $string;
}

$funcname = 'testfunction';
$params = "'this is, parameter 1', 'this is parameter2'";

//This doesnt work, sends both parameters as the first, dont know why.
echo call_user_func($funcname, $params);


//So I want to split the parameter list:
$paramsarray = preg_split('%Complex Regex%', $params);

//And call thusly:
echo call_user_func_array($funcname, $paramsarray);

I dont know what kind of regex to use here.... I could just explode by ',' but that would explode all commas contained in strings, arrays etc... So I need a regex to do this, I'm ok with regexes, but it seems like there would be a lot of rules in this.

Answer 1

I guess if you really want to start from a string (instead of an array like others suggested), you could do:

In PHP 5.3:

$params = "'this is, parameter 1', 'this is parameter2'";
$paramsarray = str_getcsv($params, ',', "'");

In PHP 5.1/5.2:

$fp = fopen('php://temp', 'w+');
fwrite($fp, $params);
fseek($fp, 0);
$paramsarray = fgetcsv($fp, 0, ',', "'");

print_r($paramsarray);

...and get:

Array
(
    [0] => this is, parameter 1
    [1] => this is parameter2
)

...then use call_user_func_array.

If you want to use more complex types (e.g.: arrays or objects), that'll be a real challenge. You'll probably have to use the Tokenizer.