如何删除元素并替换为数组中的另一个元素？

Question

我需要查找并替换数组中的元素。是否有任何单一的PHP功能？

Answer 1

我不知道在数组中查找和替换的任何简单函数，但您总是可以执行以下操作：

$key = array_search($oldValue, $myArray);
if ($key) $myArray[$key] = $newValue;

Answer 2

您只需使用array_splice。

参见示例

$input = array("red", "green", "blue", "yellow");
array_splice($input, -2, 1, array("orange", "maroon"));
// $input is now array("red", "green", "orange", "maroon","yellow")

Answer 3

试试这个：

<?php
$myArray = array("John","William","Henry","Tom","Peter");
$newArray = array_splice($myArray, 2, 1, "Susan");
foreach($myArray as $key => $value) {
    echo "$key - $value <br />";
}
?>