Answers for "remove element in an array array using key"

php delete array item by value

$colors = array("blue","green","red");

//delete element in array by value "green"
if (($key = array_search("green", $colors)) !== false) {
    unset($colors[$key]);
}

php delete element from array

//Delete array items with unset(no re-index) or array_splice(re-index)
$colors = array("red","blue","green");                             
unset($colors[1]);//remove second element, do not re-index array

$colors = array("red","blue","green");
array_splice($colors, 1, 1); //remove second element, re-index array

remove key of an array php

$result_Member = $this->Member->get_list_member_belong_to_company($id);

/* 
$result_Member = array(
	[10] => 10,
    [20] => 11,
    [30] => 12,
)
*/

// remove key, get values only
$member_ids = array_values($result_Member);

/*
$result_Member = array(
	[0] => 10,
    [1] => 11,
    [2] => 12,
)
*/