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PHP array_column() Function

PHP array_column() Function is used to get the values from a single column in the given input array. It accepts three parameters in which two are mandatory and one is optional. It returns an array as output containing the values from a single column of the input array.

Syntax:

array_column($array, $column_key, $index_key);

Parameter Values

Parameter	Description
array	This is a required parameter. This parameter defines the multi-dimensional array to use.
column_key	This is a required parameter. This parameter definesan integer key or a string key name of the column of values to return.
index_key	This is an optional parameter. This parameter defines the column to use as the indexkeys for the returned array.

Here is an example of array_column() function in PHP:

<html>
<body>
<pre>
<?php
$a = array(
array(
    'id' => 01,
    'first_name' => 'Abhimanyu',
    'last_name' => 'Sharma',
  ),
array(
    'id' => 02,
    'first_name' => 'Rishabh',
    'last_name' => 'Pant',
  ),
array(
    'id' => 03,
    'first_name' => 'Jack',
    'last_name' => 'Daniel',
  )
);

$last_names = array_column($a, 'last_name');
print_r($last_names);
?>
</pre>
</body>
</html>

Output:

Array
(
    [0] => Sharma
    [1] => Pant
    [2] => Daniel
)

Example 2:

<html>
<body>
<pre>
<?php
$a = array(
array(
    'id' => 01,
    'first_name' => 'Abhimanyu',
    'last_name' => 'Sharma',
  ),
array(
    'id' => 02,
    'first_name' => 'Rishabh',
    'last_name' => 'Pant',
  ),
array(
    'id' => 03,
    'first_name' => 'Jack',
    'last_name' => 'Daniel',
  )
);

$first_names = array_column($a, 'first_name');
print_r($first_names);
$last_names = array_column($a, 'last_name');
print_r($last_names);
?>
</pre>
</body>
</html>

Output:

Array
(
    [0] => Abhimanyu
    [1] => Rishabh
    [2] => Jack
)
Array
(
    [0] => Sharma
    [1] => Pant
    [2] => Daniel
)

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