How to change the value of the last element of an array in php

Change method: 1. Directly reassign the last element of the array with the syntax "$arr[sizeof($arr)-1]=new value;"; 2. Use the array_splice() function to replace the last array The value of the element, the syntax is "array_splice($arr,-1,1,"new value")".

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

php changes the array at the end A value

Method 1: Directly reassign the last element of the array ($arr[array length-1])

<?php
$arr=array("red","green","blue","yellow");
var_dump($arr);
$arr[sizeof($arr)-1]=1;
var_dump($arr);
?>

Method 2: Use the array_splice() function to replace the value of the last array element

array_splice() function from the array Removes the selected element and replaces it with a new element. The function will also return an array of removed elements.

<?php
header("Content-type:text/html;charset=utf-8");
$arr=array("red","green","blue","yellow");
var_dump($arr);
array_splice($arr, -1, 1, "a");
var_dump($arr);
?>

Recommended learning: "PHP Video Tutorial", "PHP ARRAY"

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