Php array keys
From w3cyberlearnings
Contents |
PHP function array_keys
This function returns all array keys from the array.
Syntax array_keys
- array: array input
array_keys(array);
Example 1
<?php
$student = array('Abbey' => 89, 'Abbie' => 88, 'Abbigail' => 83, 'Aiyana' => 93);
$student_name = array_keys($student);
foreach ($student_name as $name) {
echo $name . '<br/>';
}
?>
Output
Abbey Abbie Abbigail Aiyana
Example 2
<?php
$student = array(
'A300' => array('name' => 'J4', 'score' => 80),
'A301' => array('name' => 'J3', 'score' => 10),
'A302' => array('name' => 'J2', 'score' => 50),
'A303' => array('name' => 'J1', 'score' => 30),
);
$key_code = array_keys($student);
foreach ($key_code as $key) {
echo $key . '<br/>';
}
?>
Output
A300 A301 A302 A303
Example 3
<?php
$fruit = array('apple', 'banana', 'coconut');
$akeys = array_keys($fruit);
print_r($akeys);
?>
Output
Array
(
[0] => 0
[1] => 1
[2] => 2
)
Related Links
- array_change_key_case
- array_chunk
- array_combine
- array_count_values
- array_diff_assoc
- array_diff_key
- array_diff_uassoc
- array_diff_ukey
- array_diff
- array_fill_keys
- array_fill
- array_filter
- array_flip
- array_intersect_assoc
- array_intersect_key
- array_intersect_uassoc
- array_intersect_ukey
- array_intersect
- array_key_ exists
- array_keys
