# PHP array_column() Function

PHP Array Reference

## Example

Get column of last names from a recordset:

<?php
// An array that represents a possible record set returned from a database
$a = array(
array(
'id' => 5698,
'first_name' => 'Peter',
'last_name' => 'Griffin',
),
array(
'id' => 4767,
'first_name' => 'Ben',
'last_name' => 'Smith',
)
array(
'id' => 3809,
'first_name' => 'Joe',
'last_name' => 'Doe',
)
);
$last_names = array_column($a, 'last_name');
print_r($last_names);
?>

Output:

Array
(
[0] => Griffin
[1] => Smith
[2] => Doe
)

## Definition and Usage

The array_column() function returns the values from a single column in the input array.

## Syntax

array_column(array,column_key,index_key);

Parameter | Description
--- | ---
array | Required. Specifies the multi-dimensional array (record-set) to use
column_key | Required. An integer key or a string key name of the column of values to return. This parameter can also be NULL to return complete arrays (useful together with index_key to re-index the array)
index_key | Optional. The column to use as the index/keys for the returned array

## Technical Details

Return Value: | Returns an array of values that represents a single column from the input array
PHP Version: | 5.5+

## More Examples

## Example 1

Get column of last names from a recordset, indexed by the "id" column:

<?php
// An array that represents a possible record set returned from a database
$a = array(
array(
'id' => 5698,
'first_name' => 'Peter',
'last_name' => 'Griffin',
),
array(
'id' => 4767,
'first_name' => 'Ben',
'last_name' => 'Smith',
)
array(
'id' => 3809,
'first_name' => 'Joe',
'last_name' => 'Doe',
)
);
$last_names = array_column($a, 'last_name', 'id');
print_r($last_names);
?>

Output:

Array
(
[5698] => Griffin
[4767] => Smith
[3809] => Doe
)

PHP Array Reference

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