PHP merge array if empty

Question

Is there a nice way to merge two arrays in PHP.

My $defaults-array contains default values. If the $properties-array contains an empty string I want to use the value from the $defaults-array.

My code so far looks as following:

    $defaults = array( 
        'src' => site_url() . '/facebook_share.png',
        'alt' => 'Facebook',
        'title' => 'Share',
        'misc' => '',
        );


    $properties = array( 
        'src' => '',
        'alt' => '',
        'title' => 'Facebook Share',
        'text' => 'FB Text', //further properties
        );

$arr = array_merge( $defaults, $properties);
var_dump($arr);

Current result:

    $arr = array( 
        'src' => '',
        'alt' => '',
        'title' => 'Facebook Share',
        'text' => 'FB Text',
        'misc' => '',
        );

Desired result:

    $arr = array( 
        'src' => site_url() . '/facebook_share.png',
        'alt' => 'Facebook',
        'title' => 'Facebook Share',
        'text' => 'FB Text',
        'misc' => '',
        );

Hope someone can help.

AbraCadaver · Accepted Answer · 2020-09-11 17:59:32Z

5

Filter out the empties an then merge:

$arr = array_merge($defaults, array_filter($properties));

Keep in mind that array_filter will filter out elements that are empty string '', 0, null, false.

edited Sep 11, 2020 at 17:59

answered Nov 5, 2014 at 16:57

AbraCadaver

79.2k7 gold badges75 silver badges91 bronze badges

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

Comments

Halayem Anis · Accepted Answer · 2014-11-05 17:57:34Z

3

Try with this function

/**
  * @param {array} the properties array. transmitted by referance 
  * @param {array} the default array
  */
function getTheBest(&$properties, $defaults) {
    $temp = $properties;
    foreach ($properties as $key => $value) {
        if(empty($properties[$key]) && array_key_exists($key, $defaults) && !empty($defaults[$key]) ) {
            $properties[$key] = $defaults[$key];
        }
    }
}

answered Nov 5, 2014 at 17:57

Halayem Anis

7,8052 gold badges28 silver badges45 bronze badges

Collectives™ on Stack Overflow

PHP merge array if empty

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related