CODEWITHSUNDEEP
php
user10525507
user10525507

Reputation:

PHP change order in Array with foreach

$fruit = array(0 => "Lemon", 1 => "Apple");
$order = array(0 => "no1", 1 => "no2");
$new_array = array();
foreach ($order as $index) {
    $new_array[$index] = $fruit[$index];
}
print_r($new_array);

It shows:

Notice: Undefined index: no1 in C:\xampp\htdocs\jobs.php on line 6
Notice: Undefined index: no2 in C:\xampp\htdocs\jobs.php on line 6

What should I do? Thank you :)

Upvotes: 0

Views: 85

Answers (2)

André DS
André DS

Reputation: 1901

You should use array_combine() function available in PHP (see PHP Docs) :

"array_combine — Creates an array by using one array for keys and another for its values"

$fruit = array(0 => "Lemon", 1 => "Apple");
$order = array(0 => "no1", 1 => "no2");
$new_array = array_combine($order, $fruit);
print_r($new_array);

// Output : Array ( [no1] => Lemon [no2] => Apple )

Working example: https://3v4l.org/rW71r

Upvotes: 2

shauns2007
shauns2007

Reputation: 128

To achieve that you need to use the key of the loop and use that to get the fruit, just keep in mind that you will get a notice if the key doesn't exist as you did above.

$fruit = array(0 => "Lemon", 1 => "Apple");
$order = array(0 => "no1", 1 => "no2");
$new_array = array();
foreach ($order as $key => $index) {
    $new_array[$index] = $fruit[$key];
}
print_r($new_array);

Upvotes: 0

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