#PHP How to remove key values from an array?
In PHP, you can use the "array_values()" function to remove key values from the array. This function will return all the values in the array. Its syntax is "array_values(array)", and its parameter array represents The array to be operated on, the return value is an indexed array containing all values.
Sample code
<?php
$array = array("size" => "XL", "color" => "gold");
print_r(array_values($array));
?>The above routine will output:
Array
(
[0] => XL
[1] => gold
)<?php
/**
* Get all values from specific key in a multidimensional array
*
* @param $key string
* @param $arr array
* @return null|string|array
*/
function array_value_recursive($key, array $arr){
$val = array();
array_walk_recursive($arr, function($v, $k) use($key, &$val){
if($k == $key) array_push($val, $v);
});
return count($val) > 1 ? $val : array_pop($val);
}
$arr = array(
'foo' => 'foo',
'bar' => array(
'baz' => 'baz',
'candy' => 'candy',
'vegetable' => array(
'carrot' => 'carrot',
)
),
'vegetable' => array(
'carrot' => 'carrot2',
),
'fruits' => 'fruits',
);
var_dump(array_value_recursive('carrot', $arr)); // array(2) { [0]=> string(6) "carrot" [1]=> string(7) "carrot2" }
var_dump(array_value_recursive('apple', $arr)); // null
var_dump(array_value_recursive('baz', $arr)); // string(3) "baz"
var_dump(array_value_recursive('candy', $arr)); // string(5) "candy"
var_dump(array_value_recursive('pear', $arr)); // null
?>Recommended tutorial: "PHP》
The above is the detailed content of How to remove key values from an array in PHP?. For more information, please follow other related articles on the PHP Chinese website!
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
