flatten nested array php?

Question

Ok taken the following:

    array(80) {
      ["_edit_lock"]=>
      array(1) {
        [0]=>
        string(12) "1405955175:1"
      }
      ["_edit_last"]=>
      array(1) {
        [0]=>
        string(1) "1"
      }
      ["slide_template"]=>
      array(1) {
        [0]=>
        string(7) "default"
      }
      ["pyre_video"]=>
      array(1) {
        [0]=>
        string(0) ""
      }
      ["pyre_full_width"]=>
      array(1) {
        [0]=>
        string(2) "no"
      }
   }

how do I flatten this to :

array(80) {
  ["_edit_lock"]=>  string(12) "1405955175:1"
  ["_edit_last"]=>  string(1) "1"
  ["slide_template"]=>  string(7) "default"
  ["pyre_video"]=>  string(0) ""
  ["pyre_full_width"]=>   string(2) "no"

}

user21926 · Accepted Answer · 2014-07-21 18:58:41Z

2

<?php
$res = array();

foreach ($src_array as $key => $value) {
  $res[$key] = $value[0];
}

var_dump($res);
?>

answered Jul 21, 2014 at 18:58

user21926

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3 Comments

vimes1984 Over a year ago

which is quicker? array_map or for each?

user21926 Over a year ago

For an 80 element array, there would be no noticeable difference.

vimes1984 Over a year ago

I was just curious, if it was used on a larger array.

Sammitch · Accepted Answer · 2014-07-21 18:59:38Z

2

$flattened = array_map(function($arr){return $arr[0];}, $your_array);

answered Jul 21, 2014 at 18:59

Sammitch

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3 Comments

vimes1984 Over a year ago

which is quicker? array_map or for each?

Shiplu Mokaddim Over a year ago

@vimes1984 Why bother such micro level optimization?

Sammitch Over a year ago

@vimes1984 the time required to write the tests to judge which is faster will waste more time than using the faster method will ever save. Hell, I don't think it will even cover writing this comment.

Tyralcori · Accepted Answer · 2014-07-21 19:01:38Z

0

Whats about the following?

<?php
$myArray = array(
     'first' => array('blabla'),
     'second' => array('blabla'),
);

foreach($myArray as $key => $layer) {
     if(is_array($layer)) {
          $myArray[$key] = $layer[key($myArray)];
     } else { continue; }
}

answered Jul 21, 2014 at 19:01

Tyralcori

1,06714 silver badges34 bronze badges

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