How to remove key (key name) from PHP one-dimensional array

Two removal methods: 1. Use the array_values() function to remove the key (key name), the syntax is "array_values ​​(array)". 2. Define an empty array, use the foreach statement to loop through the original array, and pass the key values ​​of the original array into the empty array in the loop body. The syntax is "foreach(original array as $v){$empty array name[]= $v;}".

The operating environment of this tutorial: windows7 system, PHP version 8.1, DELL G3 computer

php one-dimensional array Two methods to remove key (key name)

Method 1: Use array_values() function to remove

array_values() function in PHP You can get the values ​​of all elements in the array. The syntax of this function is as follows:

array_values($array)

• The parameter $array is the array being operated on.

array_values() function is to return the values ​​of all elements in the array. It is very simple to use. With only one required parameter, you can return an array containing all the values ​​in the given array. Array, but does not retain key names. The returned array will be in the form of an indexed array, with array indices starting at 0 and increasing by 1.

array_values() function is particularly suitable for arrays with confusing element subscripts, or for converting associative arrays into indexed arrays.

Example: array_values() function removes keys from the array

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);
$arr=array("Peter"=>65,"Harry"=>80,"John"=>78,"Clark"=>90);
var_dump($arr);
var_dump(array_values($arr));
?>

Output result:

##Method 2: Use foreach Loop and remove an empty array

• Use the foreach statement to loop through the original array

• In the loop body, change the keys of the original array The value is passed into the empty array

<?php
$arr1=array("aaa"=>11,"bbb"=>22,"ccc"=>33);
var_dump($arr1);
$arr2=array();
foreach($arr1 as $v){
    $arr2[]=$v;
}
var_dump($arr2);
?>

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