array_keys() function in php || php array

array_keys() function in php

by Pooja Chikara 06-Apr-20

0 237


array_keys() function of PHP is used to return all keys of an array means it returns an array which contains all keys of existing array. It is an inbuilt function of PHP.

Syntax:

array_key s($arr);

Here,

$arr is a PHP array.


Example:

<?php
$arr1= array("fruit1"=>"Apple","fruit2"=>"Banana","fruit3"=>"Orange","fruit4"=>"Pear");
$result=array_keys($arr1);
echo "<pre>";
print_r($result);
?>

Output:

array_keys() function in php


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