Python provides the "*" operator for unpacking a list of tuples and giving them to a function as arguments, like so:
args = [3, 6]
range(*args) # call with arguments unpacked from a list
This is equivalent to:
range(3, 6)
Does anyone know if there is a way to achieve this in PHP? Some googling for variations of "PHP Unpack" hasn't immediately turned up anything.. perhaps it's called something different in PHP?
In php5.6 Argument unpacking via ... (splat operator) has been added. Using it, you can get rid of call_user_func_array() for this simpler alternative. For example having a function:
function add($a, $b){
return $a + $b;
}
With your array $list = [4, 6]; (after php5.5 you can declare arrays in this way).
You can call your function with ...:
echo add(...$list);
You can use call_user_func_array() to achieve that:
call_user_func_array("range", $args); to use your example.
call_user_func_array(), func_get_args(), etc., in favor of the variadics operator "...". Now ... I would be much obliged if someone could tell me how to do this in python: $m = 'getName'; $name = $obj->$m();In certain scenarios, you might consider using unpacking, which is possible in php, is a similar way to python:
list($min, $max) = [3, 6];
range($min, $max);
This is how I have arrived to this answer at least.
Google search: PHP argument unpacking
($min, $max) or {$min, $max}. But list is what I was looking for
min, max = [3, 6]You should use the call_user_func_array
call_user_func_array(array(CLASS, METHOD), array(arg1, arg2, ....))
http://www.php.net/call_user_func_array
or use the reflection api http://www.php.net/oop5.reflection
<?php
function add(int ...$arr) { // typehint ready
return array_sum($arr);
}
var_dump(add(1, 2, 3, ...[1, 2, 3])); // int(12)
Another example with ... - operator.
RFC: https://wiki.php.net/rfc/variadics
