PHP: concatenation of multidimensional array elements

Question

I want to concatenate one element of a multidimensional array with some strings.

<?
$string1 = 'dog';
$string2 = array
           (
            'farm' => array('big'=>'cow', 'small'=>'duck'),
            'jungle' => array('big'=>'bear', 'small'=>'fox')
           );
$string3 = 'cat';
$type = 'farm';
$size = 'big';
$string = "$string1 $string2[$type][$size] $string3";
echo($string);
?>

By using this syntax for $string, I get:

dog Array[big] cat

I would like not to use the alternate syntax

$string = $string1 . ' ' . $string2[$type][$size] . ' ' . $string3;

which works.

What's wrong with "$string1 $string2[$type][$size] $string3"?

to concatenate strings you should use . sign $string=$string1.$string2[$type][$size].$string3; — fsonmezay
– fsonmezay, Commented Feb 3, 2011 at 12:56

Felix Kling · Accepted Answer · 2011-02-03 12:55:52Z

6

Use the "complex syntax":

$string = "$string1 {$string2[$type][$size]} $string3";

PHP's variable parsing is quite simple. It will recognize one level array access, but not more level. By enclosing the expression in {} you explicitly state which part of the string is a variable.

See PHP - Variable parsing.

answered Feb 3, 2011 at 12:55

Felix Kling

820k181 gold badges1.1k silver badges1.2k bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Kynikos Over a year ago

Felix, Thank you very much for your fast response.

Stephen · Accepted Answer · 2011-02-03 12:58:10Z

0

I'm not a fan of complex syntax, or variable parsing in strings. Normally I would use the "alternate" syntax you described. You could do this as well:

$string = implode(' ', array($string1, $string2[$type][$size], $string3));

answered Feb 3, 2011 at 12:58

Stephen

19k10 gold badges62 silver badges98 bronze badges

1 Comment

Kynikos Over a year ago

Interesting approach to solving the problem.

UltraInstinct · Accepted Answer · 2011-02-03 12:58:31Z

0

Use this:

$string = "$string1 {$string2[$type][$size]} $string3";

answered Feb 3, 2011 at 12:58

UltraInstinct

44.6k12 gold badges85 silver badges108 bronze badges

Collectives™ on Stack Overflow

PHP: concatenation of multidimensional array elements

3 Answers 3

1 Comment

1 Comment

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

1 Comment

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related