combine 2 comma separated list into one in php [duplicate] - php

Question

This question already has answers here:
How would combine multiple exploded lists created by foreach into one array? [duplicate]
(4 answers)
Closed 7 months ago.
I have 2 arrays that are coming from the database, [options] column has comma-separated values.
Array
(
[0] => Array
(
[id] => 143
[menu_id] => 590
[name] => bread
[options] => small, large
)
[1] => Array
(
[id] => 144
[menu_id] => 590
[name] => jam
[options] => mango, orange, grape
)
)
Is there have any way to combine the list of [options] at [0] and [1]?
Example: small, large, mango, orange, grape
Approach
<?php foreach ($menu_options as $key => $menu_option) : ?>
<?PHP $exploded_variant_options = explode(',', $menu_option['options']);
foreach ($exploded_variant_options as $exploded_variant_option) : ?>
<?php echo ucfirst(sanitize($exploded_variant_option)); ?> //print one by one
<?php endforeach; ?>
<?php endforeach; ?>

Answer 1

My suggestion would be to use array_merge. The code would look like this:
<?php
$all_options = [];
foreach( $menu_options as $key => $menu_option ) {
$all_options = array_merge($all_options, explode(", ", $menu_option["options"]));
}
?>

Answer 2

if this is your array :
$arrays = array (
array( 'id' => 143, 'menu_id' => 590, 'name' => 'bread', 'options' => 'small,large'),
array( 'id' => 144, 'menu_id' => 590, 'name' => 'jam', 'options' => 'mango,orange,grape')
);
you can use array_map for achieving that :
function spliter($key, $value){
if($key == 'options')
return $value = explode(',', $value);
else
return $value;
}
foreach($arrays as &$array)
$array = array_map( 'spliter' , array_keys($array), $array);
then this will be a dump of your $arrays :
array(2) {
[0]=>
array(4) {
[0]=>
int(143)
[1]=>
int(590)
[2]=>
string(5) "bread"
[3]=>
array(2) {
[0]=>
string(5) "small"
[1]=>
string(5) "large"
}
}
[1]=>
&array(4) {
[0]=>
int(144)
[1]=>
int(590)
[2]=>
string(3) "jam"
[3]=>
array(3) {
[0]=>
string(5) "mango"
[1]=>
string(6) "orange"
[2]=>
string(5) "grape"
}
}
}

Answer 3

If you just want to print out all the options (insertion order) and not modify them further, you could also just call this:
<?php
$arr = [
['id' => 143, 'menu_id' => 590, 'name' => 'bread', 'options' => 'small, large'],
['id' => 144, 'menu_id' => 590, 'name' => 'jam', 'options' => 'mango, orange, grape']
];
var_dump(array_reduce(array_column($arr, 'options'), function ($c, $i) {
return $c ? "${c}, ${i}" : $i;
}));
// prints: string(34) "small, large, mango, orange, grape"
?>
Otherwise, I suggest using the approach shown by "Teodor".