Parse string of repeating "[key]value" substrings into an associative array

Question

I know this has been asked before but this is a bit different.

I have a string like:

[de]Text1[fr]Text2[en]Text3

that I need to split in key-value pairs like

array('de'=>'Text','fr'=>'Text','en'=>'Text')

I do it like this at the moment, but this is not very elegant (and produces an empty object at the first place in the array:

$title = '[de]Text1[fr]Text2[en]Text3';

$titleParts = explode('[',$title);

$langParts;
foreach($titleParts as $titlePart){
    $langPart = explode(']',$titlePart);
    $langParts[$langPart[0]] = $langPart[1];
}

print_r($langParts);

Output:

Array ( [] => [de] => Text1 [fr] => Text2 [en] => Text3 )

As written, I need to split a string (given above) into key-value pairs (given above) as per my code (given above) but more elegant. But thanks for the downvote anyway... — Raphael Jeger
– Raphael Jeger, Commented Apr 14, 2015 at 6:15

Glavić · Accepted Answer · 2015-04-14 06:30:52Z

4

You could use preg_match_all():

$title = '[de]Text1[fr]Text2[en]Text3';
preg_match_all('~\[([^[]+)\]([^[]+)~', $title, $match);
$output = array_combine($match[1], $match[2]);

demo

_{Your example will also work with minimal change: demo}

edited Apr 14, 2015 at 6:30

answered Apr 14, 2015 at 6:15

Glavić

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4 Comments

Rasclatt Over a year ago

Ah, we did same preg_match_all(). I'll delete mine

Glavić Over a year ago

@Rasclatt: you didn't need to do that, your pattern was different, and the loop also, so the answer is different...

Rasclatt Over a year ago

Yeah, approach is the same though, I'll undelete it, but I don't know that my preg_match expression is as good as yours.

Rasclatt Over a year ago

And your array_combine() is genius. Yours is better all around! Nice.

Rasclatt · Accepted Answer · 2015-04-14 06:21:48Z

2

Try using a preg_match_all():

<?php
    $title = '[de]Text1[fr]Text2[en]Text3';
    preg_match_all('/([\[a-z\]]{1,})([a-zA-Z0-9]{1,})/',$title,$match);

    if(isset($match[2])) {
            foreach($match[1] as $key => $value) {
                    $array[str_replace(array("[","]"),"",$value)] = $match[2][$key];
                }
        }
    print_r($array);
?>

Gives you:

Array
(
    [de] => Text1
    [fr] => Text2
    [en] => Text3
)

edited Apr 14, 2015 at 6:21

answered Apr 14, 2015 at 6:15

Rasclatt

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