CODEWITHSUNDEEP
phparraysfunction
OM The Eternity
OM The Eternity

Reputation: 16204

Can we pass an array as parameter in any function in PHP?

I have a function to send mail to users and I want to pass one of its parameter as an array of ids.

Is this possible to do? If yes, how can it be done?

Suppose we have a function as:

function sendemail($id, $userid) {

}

In the example, $id should be an array.

Upvotes: 48

Views: 200763

Answers (13)

Mahmoud Magdy
Mahmoud Magdy

Reputation: 931

I found Delcon answer helpful but I was looking for this

function sendmail($user1, $user2, $user3){
  echo $user1;
  echo $user2;
  echo $user3;
}

$users = array('user1','user2','user3');
sendmail(...$users);

Upvotes: 3

Oscar Paredez
Oscar Paredez

Reputation: 73

I composed this code as an example. Hope the idea works!

<?php
$friends = array('Robert', 'Louis', 'Ferdinand');
  function greetings($friends){
    echo "Greetings, $friends <br>";
  }
  foreach ($friends as $friend) {
  greetings($friend);
  }
?>

Upvotes: 2

Noredine Bahri
Noredine Bahri

Reputation: 71

<?php

function takes_array($input)

{

    echo "$input[0] + $input[1] = ", $input[0]+$input[1];

}

?>

Upvotes: 0

Delcon
Delcon

Reputation: 2555

even more cool, you can pass a variable count of parameters to a function like this:

function sendmail(...$users){
   foreach($users as $user){

   }
}

sendmail('user1','user2','user3');

Upvotes: 15

alex
alex

Reputation: 490283

You can pass an array as an argument. It is copied by value (or COW'd, which essentially means the same to you), so you can array_pop() (and similar) all you like on it and won't affect anything outside.

function sendemail($id, $userid){
    // ...
}

sendemail(array('a', 'b', 'c'), 10);

You can in fact only accept an array there by placing its type in the function's argument signature...

function sendemail(array $id, $userid){
    // ...
}

You can also call the function with its arguments as an array...

call_user_func_array('sendemail', array('argument1', 'argument2'));

Upvotes: 70

user3743829
user3743829

Reputation: 11

Yes, we can pass arrays to a function. 

$arr = array(“a” => “first”, “b” => “second”, “c” => “third”);

function user_defined($item, $key)
{
    echo $key.”-”.$item.”<br/>”;
} 

array_walk($arr, ‘user_defined’);

We can find more array functions here

http://skillrow.com/array-functions-in-php-part1/

Upvotes: 1

Richard June
Richard June

Reputation: 706

Yes, you can do that.

function sendemail($id_list,$userid){
    foreach($id_list as $id) {
        printf("$id\n"); // Will run twice, once outputting id1, then id2
    }
}

$idl = Array("id1", "id2");
$uid = "userID";
sendemail($idl, $uid);

Upvotes: 5

vickirk
vickirk

Reputation: 4067

Its no different to any other variable, e.g.

function sendemail($id,$userid){
  echo $arr["foo"]; 
}

$arr = array("foo" => "bar");
sendemail($arr, $userid);

Upvotes: 2

JackWilson
JackWilson

Reputation: 577

Since PHP is dynamically weakly typed, you can pass any variable to the function and the function will try to do its best with it.

Therefore, you can indeed pass arrays as parameters.

Upvotes: 1

Davide Gualano
Davide Gualano

Reputation: 13003

In php 5, you can also hint the type of the passed variable:

function sendemail(array $id, $userid){
  //function body
}

See type hinting.

Upvotes: 1

Gaurav
Gaurav

Reputation: 28755

function sendemail(Array $id,$userid){  // forces $id must be an array
Some Process....
}


$ids  = array(121,122,123);
sendmail($ids, $userId);

Upvotes: 4

Shakti Singh
Shakti Singh

Reputation: 86406

What should be clarified here.

Just pass the array when you call this function. 

function sendemail($id,$userid){
Some Process....
}
$id=array(1,2);
sendmail($id,$userid);

Upvotes: 4

fabrik
fabrik

Reputation: 14365

Yes, you can safely pass an array as a parameter.

Upvotes: 5

Related Questions