CODEWITHSUNDEEP
phparrays
Racooon
Racooon

Reputation: 1496

Changing value of an Array

I want to change the value of an array without loop-

Example code:

<?php
    //current array
    $ids = array('1113_1', '1156_6', '1342_16', '1132_3', '1165_2');

    //result should be looks like this
    $ids = array('1113', '1156', '1342', '1132', '1165');
?>

is it possible to do it without any loop?

Upvotes: 0

Views: 1135

Answers (4)

mario
mario

Reputation: 145472

Instead of the shown string/array function workarounds, you can also just use a PHP built-in to filter the arrays:

$ids = array('1113_1', '1156_6', '1342_16', '1132_3', '1165_2');
$ids = array_map("intval", $ids);

This converts each entry into an integer, which is sufficient in this case to get:

Array
(
    [0] => 1113
    [1] => 1156
    [2] => 1342
    [3] => 1132
    [4] => 1165
)

Upvotes: 3

Marc B
Marc B

Reputation: 360562

array_map(), but internally it'd still be using a loop.

function $mycallback($a) {
   ... process $a
   return $fixed_value;
}

$fixed_array = array_map('mycallback', $bad_array);

Upvotes: 1

George Cummins
George Cummins

Reputation: 28906

Possible? Yes:

$ids[0] = substr($ids[0], 0, -2);
$ids[1] = substr($ids[1], 0, -2);
$ids[2] = substr($ids[2], 0, -3);
$ids[3] = substr($ids[3], 0, -2);
$ids[4] = substr($ids[4], 0, -2);

But why do you want to avoid using a loop in this case?

Upvotes: 1

Naftali
Naftali

Reputation: 146302

Try this using array_map():

<?php
function remove_end($n)
{
    list($front) = explode("_", $n);
    return $front;
}

$a = array('1113_1', '1156_6', '1342_16', '1132_3', '1165_2');
$a = array_map("remove_end", $a);
print_r($a);
?>

Demo: http://codepad.org/iGJ3cJW2

Upvotes: 2

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