Quick Reference
The PHP array_column() function returns the values from a single column in the input array.
<?php
$a = array(
array(
'id' => 44,
'first_name' => 'Sam',
'last_name' => 'Martin',
),
array(
'id' => 57,
'first_name' => 'Mike',
'last_name' => 'Martin',
),
array(
'id' => 90,
'first_name' => 'Gabe',
'last_name' => 'Martin',
)
);
$first_names = array_column($a, 'first_name');
print_r($first_names);
?>Note
Arrays count starting from zero NOT one. So item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on.
Output
Array ( [0] => Sam [1] => Mike [2] => Gabe )Syntax
array_column(array, column_key, index_key)Parameters
| Parameter | Description |
|---|---|
| array | Specifies the array to use (required) |
| column_key | An integer key or a string key name of the column of values to return; can also be NULL to return complete arrays (required) |
| index_key | The column to use as the index/keys for the returned array |
PHP Notes:
- When using PHP, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
- Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on
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