[ACCEPTED]-How to extract particular fields from an array-foreach
considering its CakePHP, $titles = Set::extract('/title', $articles);
edit:
http://book.cakephp.org/view/1487/Set
Update:
With CakePHP 1 2.x Hash has replaced Set.
$titles = Hash::extract($articles, '{n}.title');
You can use for example array_map, but why do you 3 not want to use Loops? In fact every method, that 2 is able to modify the array in the way you 1 want it, will iterate over it.
function reduce_to_title ($item) {
return $item['title'];
};
$titles = array_map('reduce_to_title', $articles);
Or since PHP>=5.3
$titles = array_map(function ($item) {
return $item['title'];
}, $articles);
you can use this
print_r(array_map('array_shift', $articles));
EDIT :
Assumption : if 1 title is the first element of array.
since 5.5, array_column does exactly what 1 you explained.
$titles = array_column($articles, "title"); // [0=>"When",1=>"Something"]
For more examples check the PHP manual
What about while loops?
reset($articles); while($a = each($articles)){echo $a['value']['title'];}
0
an improved version of KingCrunch's answer:
function get_column(&$array,$column) {
foreach ($array as $value) {
$ret[]=$value[$column];
}
return $ret;
}
this 6 is pretty universal function and can be 5 put into some library, and then called with 4 just single line, which is shorter than 3 in every other answer:
$titles = get_column($articles, 'title');
Update
However, it seems 2 that cake already have such a function, so, the 1 only proper answer is
How to extract particular fields from an array
Hey, since you're using CakePHP, why don't 3 you just add title to the fields array in your find()? For 2 example, the following,
$this->Article-find('all', array('fields'=>'Article.title'));
will pull only the 1 titles of all matching Articles in the database.
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