How to remove Array key value in PHP?

#PHP How to remove Array key values?

In PHP, you can use the "array_keys()" function to remove the array key values. This function will return some or all of the key names in the array. The syntax is "array_keys(array)", Its parameter array represents the array whose key values ​​are to be removed. When using it, you only need to pass the array into the array.

Code example

<?php
$array = array(0 => 100, "color" => "red");
print_r(array_keys($array));
$array = array("blue", "red", "green", "blue", "blue");
print_r(array_keys($array, "blue"));
$array = array("color" => array("blue", "red", "green"),
               "size"  => array("small", "medium", "large"));
print_r(array_keys($array));
?>

Output:

Array
(
    [0] => 0
    [1] => color
)
Array
(
    [0] => 0
    [1] => 3
    [2] => 4
)
Array
(
    [0] => color
    [1] => size
)

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