How to delete the maximum value from a php array

Two methods: 1. Traverse the array and use unset() to delete the largest element. The syntax "foreach($a as $k=>$v){if($v==max($a )){unset($a[$k]);}}". 2. Use the "sort($a);array_pop($a);" statement to delete.

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

php array delete maximum Two methods of value

1. Traverse the array and use unset() to delete the largest element

• Use foreach Traverse the array

• In the loop body, find the element with the maximum value

• Use unset() to delete the element

<?php
header("Content-type:text/html;charset=utf-8");
$arr=array(1,45,9,52,0,-5,21,-1,40);
var_dump($arr);
$max=max($arr);
echo "最大值为：".$max;
foreach($arr as $k=>$v){
	if($v==$max){
		unset($arr[$k]);
	}
}
echo "<br><br>删除最大值后：";
var_dump($arr);
?>

2. Sort the array in ascending order and use array_pop() to delete the largest element

• Use sort() sorts the array in ascending order

• After sorting, the last element of the array is the maximum value, just use array_pop() to delete it.

  array_pop(): Delete the last element in the array.

<?php
header("Content-type:text/html;charset=utf-8");
$arr=array(1,45,9,52,0,-5,21,-1,40);
var_dump($arr);
sort($arr);
var_dump($arr);
array_pop($arr);        //去掉最大值
var_dump($arr);
?>

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