passing var as string to an array

Question

Im sure this is super simple. im trying to pass values held in a var into another var as an array.

I have a var $guideinValue that contains string of values separated by commas. the values stand for category ids.

when i echo $guideinValue it shows 18,19 which are the proper category id's. im trying to use these in the wordpress var $selected_cats.

when i manually punch into $selected_cats = array(18,19); everything works and a print_r of 1$selected_cats1 shows Array ( [0] => 18 [1] => 19 )

but when i use $selected_cats = array($guideinValue);, a print_r shows Array ( [0] => 18,19 ) and nothing works ofc

Why does this happen and how do i fix my syntax?

$selected_cats = explode(',', $guideinValue); you'll get output in array format — Kamil Karkus
– Kamil Karkus, Commented Feb 8, 2015 at 12:01

VeeeneX · Accepted Answer · 2015-07-13 16:19:29Z

1

It's simple use explode function.

array explode ( string $delimiter , string $string [, int $limit ] );

Working example:

$array = explode(",", $guideinValue);

answered Feb 8, 2015 at 12:02

VeeeneX

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Comments

Codew · Accepted Answer · 2015-02-08 12:10:31Z

1

This is the proper way with array_values(), array_filter() and explode()

$selected_cats = array_values(array_filter(explode(',', $guideinValue)));

explode() - Breaks string

array_filter() - Clears empty values

array_values() - Rearrange array indexes to start from 0

answered Feb 8, 2015 at 12:03

Codew

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