php variable parameters

Question

i have a function that accepts variable number of parameters (meaning I can put X around of parameters onto that function:

MSETNX key value [key value ...]

Both key and value has to be string. Say i have another array with the following structure:

$a = array( 'key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3');

What's the most effective way to put $a as the parameters for the MSETNX function?

Thank you!

Is there a reason why you don't like to use a Redis Wrapper class like php5-redis ? — Samuel Herzog
– Samuel Herzog, Commented Jan 9, 2011 at 8:06

Amber · Accepted Answer · 2011-01-09 07:13:01Z

1

If the function must take varargs, as opposed to just accepting an array,

foreach($a as $k => $v) {
  $b[] = $k;
  $b[] = $v;
}
call_user_func_array('MSETNX', $b);

answered Jan 9, 2011 at 7:13

Amber

531k89 gold badges643 silver badges558 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Amber Over a year ago

Whoops yep. Too much Python. >.>

Neil Over a year ago

FYI if you want a function to support both varargs AND an array of said args, I find this sort of thing helps - if(func_num_args()!=1||!is_array($arg)) return thisFunc(func_get_args());. You can do fancier call_user_func stuff too if you don't want to use the function/class name.

MrGlass · Accepted Answer · 2011-01-09 07:11:45Z

0

The most effective way would be to simply pass the array, EG.: MSETNX($a);

answered Jan 9, 2011 at 7:11

MrGlass

9,27217 gold badges68 silver badges94 bronze badges

2 Comments

Patrick Over a year ago

parameter has to be string, not array

Neil Over a year ago

you mean flattening the array into a string? like MSETNX(http_build_query($a))?

Neil · Accepted Answer · 2011-01-09 07:54:06Z

0

The question is a little unclear in respect of the requisite for string input;

If you need the whole parameter to be a single string, use:

MSETNX(http_build_query($a));

If you need each element (keys and values) to be converted to strings, try this:

MSETNX(array_combine(
    array_map(array_keys($a),"strval"),
    array_map(array_values($a),"strval")
));

Neither seem particularly useful to me, but perhaps you can use this combined with Amber's suggestion?

answered Jan 9, 2011 at 7:54

Neil

3,0772 gold badges18 silver badges20 bronze badges

Collectives™ on Stack Overflow

php variable parameters

3 Answers 3

2 Comments

2 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

2 Comments

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related