Array Issue

PHP
1

Hello

I have an array with several things in it.

How can I get each of the items in that array into a series of 5 variables of the following names and in this order:

$addrp1
$addrp2
$addrp3
$addrp4
$addrp5

So if the array only contains 3 things, the first 3 will be entered in $addrp1 through to $addrp3 and $addrp4 and $addrp5 will be blank variables.

Any thoughts?

Neil

2

Wow, now that’s a “construction of a question!”

<?php
$array = array(“one”, “two”, “three”);
$arrItem1 = $array[0];
$arrItem2 = $array[1];
$arrItem3 = $array[2];

echo $arrItem1;

Something like that?

3

Is there a reason you cannot access them directly form within the array? It would be cleaner IMO.


<?php
error_reporting(-1);
ini_set('display_errors', true);

$array = array(
  'one',
  'two',
  'three'
);

for($index = 0; $index < 5; $index++){
  ${'variable' . $index} = isset($array[$index]) ? $array[$index] : '' ;
}

echo '$variable0 = ', $variable0, PHP_EOL ;
echo '$variable1 = ', $variable1, PHP_EOL ;
echo '$variable2 = ', $variable2, PHP_EOL ;
echo '$variable3 = ', $variable3, PHP_EOL ;
echo '$variable4 = ', $variable4, PHP_EOL ;

/*
  $variable0 = one
  $variable1 = two
  $variable2 = three
  $variable3 = 
  $variable4 = 
*/
4

That’s perfect. All working now. Thanks

5

What you’re looking for is list()

$arr = array( 'a', 'b', 'c' );
list( $q, $w, $e, $r, $t ) = $arr;

$q will have ‘a’, $w will have ‘b’, $e will have ‘c’, $r and $t will be NULL

6

Whilst that would work, and it’s a few less lines of code than my own offering, PHP will throw two ‘Undefined Offset’ notices. :wink:

7

Oh right, how can the “Undefined Offset” notices be resolved? Is there a way to set the variables not being used to be null or something?

Thanks

Neil

8

list( $q, $w, $e) = $arr;

9

But if I use that then what happens if I have 5 items in my array?

10

Then you would use 5 items :stuck_out_tongue:
If you are having problems due to it being a dynamic array length, then you may want to rather not use list() and just do a for loop on the array and step through it one by one.

I’m not actually sure what you are having a problem with throughout this thread. Am I missing something?

11

Right, it would throw notices - which indicates that’s not the right thing to do. Thanks for noting that.

Depending on your situation, something like this will work:


$arr = array( 'a', 'b', 'c' );

$arr = $arr + array_fill( 0, 5, null );

list( $q, $w, $e, $r, $t ) = $arr;

That array_fill() is assuming your original array has consecutive numeric indexes starting at zero. If that’s not the case, look at array_fill_keys() OR convert your original array into one like that with array_values()


$arr = array_values( $arr ) + array_fill( 0, 5, null );