php split each value of an array into 2 with a delimiter

Question

I have a php array with each value in array having a space delimiter like

a[1]="1 32"
a[2]="2 33"
a[3]="3 67"
...

I want to divide this array into 2 arrays using the delimiter space. Result should be something like:

a[1]="1"
a[2]="2"
a[3]="3"
...
b[1]="32"
b[2]="33"
b[3]="67"
...

What should be the optimal way to go about this?

You may consider using this: php.net/split and have it store first value at array a[i], and second in b[i]... Consider (i) to be your position in the array in case you insert at random times. (I was just advised that this is out of commission so you may not want to use this) — I am Cavic
– I am Cavic, Commented Dec 25, 2013 at 18:45
@LJ-C split is deprecated, it should not be used anymore. This function has been DEPRECATED as of PHP 5.3.0. Relying on this feature is highly discouraged. — SamV
– SamV, Commented Dec 25, 2013 at 18:47
@user689: I would say preg_split() is overkill for something simple as this. — Amal
– Amal, Commented Dec 25, 2013 at 18:49

Amal · Accepted Answer · 2013-12-25 18:46:15Z

1

Loop through your array, use explode() to split each value with space as the delimiter, and push them to separate arrays:

$arr1 = array();
$arr2 = array();

foreach ($array as $value) {
    list($a, $b) = explode(' ', $value);
    $arr1[] = $a;
    $arr2[] = $b;
}

Demo.

answered Dec 25, 2013 at 18:46

Amal

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Julian Kolev · Accepted Answer · 2013-12-25 19:51:19Z

1

My take with array_walk():

<?php

$input = [
    "1 32",
    "2 33",
    "3 67"
];

$array1 = [];
$array2 = [];

array_walk($input, function ($item) use (&$array1, &$array2) {
        $temp = explode(' ', $item);
        $array1[] = $temp[0];
        $array2[] = $temp[1];
    }
);

print_r($array1);
print_r($array2);

Note: The syntax assumes PHP 5.4. Demo.

answered Dec 25, 2013 at 19:51

Julian Kolev

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Comments

MillaresRoo · Accepted Answer · 2013-12-25 18:46:54Z

-1

You may use explode http://www.php.net/explode

Eg. explode(" ", $a[1]);

answered Dec 25, 2013 at 18:46

MillaresRoo

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2 Comments

user2203117 Over a year ago

He wants elements in two different arrays a[] and b[] you are putting them in one array.

MillaresRoo Over a year ago

I was only trying to show a basic use of the explode function.

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