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I have a variable length array that I need to transpose into a list of parameters for a function.
I hope there is a neat way of doing this - but I cannot see how.
The code that I am writing will be calling a method in a class - but I will not know the name of the method, nor how many parameters it has.
I tried this - but it doesn't work:
$params = array(1 => "test", 2 => "test2", 3 => "test3");
ClassName::$func_name(implode($params, ","));
The above lumps all of the values into the first parameter of the function. Whereas it should be calling the function with 3 parameter values (test, test2, test3).
What I need is this:
ClassName::$func_name("test", "test2", "test3");
Any ideas how to do this neatly?
501
php function title($title, $name) { return sprintf("%s. %s\r\n", $title, $name); } $function = new ReflectionFunction('title'); $myArray = array('Dr', 'Phil'); echo $function->invokeArgs($myArray); // prints "Dr.
To get the number of arguments that were passed into your function, call func_num_args() and read its return value. To get the value of an individual parameter, use func_get_arg() and pass in the parameter number you want to retrieve to have its value returned back to you.
A parameter array can be used to pass an array of arguments to a procedure. You don't have to know the number of elements in the array when you define the procedure. You use the ParamArray keyword to denote a parameter array.
PHP variables are assigned by value, passed to functions by value and when containing/representing objects are passed by reference.
Yes, use call_user_func_array():
call_user_func_array('function_name', $parameters_array);
You can use this to call methods in a class too:
class A {
public function doStuff($a, $b) {
echo "[$a,$b]\n";
}
}
$a = new A;
call_user_func_array(array($a, 'doStuff'), array(23, 34));
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