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
)
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