Is it possible to remove a certain value from a php array?

php can remove a certain value in the array. Two removal methods: 1. Use unset() to delete after traversing through foreach, the syntax "foreach($arr as $k=>$v){if($v==="value"){unset($arr[ $k]);}}"; 2. Find the element through array_search() and delete it with unset(), the syntax is "unset($arr[array_search("value",$arr,true)])".

The operating environment of this tutorial: windows7 system, PHP8.1 version, DELL G3 computer

php can remove a certain item in the array value.

The following are two ways to remove specified values ​​​​from the array:

Method 1: Use unset to delete after traversing through foreach

• Loop through the array through the foreach statement

• In the loop body, use the "===" operator to compare the array elements, and if they are equal, use unset to delete them

<?php
header("Content-type:text/html;charset=utf-8");
$arr=array(1,2,3,4,"aa","bb");
var_dump($arr);
foreach($arr as $k=>$v){
	if($v==="aa"){
		unset($arr[$k]);
	}
}
var_dump($arr);
?>

Method 2: Find the element through array_search and delete it with unset

• Use array_search searches the specified key value in the array and returns the corresponding key name

• Use unset to delete the element based on the key name

<?php
header("Content-type:text/html;charset=utf-8");
$arr=array(1,2,3,4,"aa","bb");
var_dump($arr);
$key=array_search("bb",$arr,true);
unset($arr[$key]);
var_dump($arr);
?>

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