<?php
//1.计算数组中所有值的乘积array_product$a = array(1, 2, 3, 4);echo "product(a) = " . array_product($a);echo "<br><br>";//2.从数组中随机取出一个或多个单元array_rand
$input = array("a", "b", "c", "d", "e");$rand_keys = array_rand($input, 2);echo $input[$rand_keys[0]];;echo "<br>";//3.将数组最后一个单元移除数组array_pop
$stack = array("0", "1", "2", "3","4");$fruit = array_pop($stack);var_dump($stack);echo "<br>"; //4.在数组开头插入一个或多个单元array_unshift$queue = array("1", "2");array_unshift($queue, "3", "4");var_dump($queue);echo "<br>";//5.将一个或多个单元压入数组的末尾（入栈）array_push
$stack = array("1", "2");array_push($stack, "3", "4");var_dump($stack);echo "<br>";//6.计算数组中所有值的和array_sum
$a = array(2, 4, 6, 8);echo "sum(a) = ".array_sum($a);echo "<br>";$b = array("a" => 1.1, "b" => 1.2, "c" => 1.3);echo "sum(b) = " . array_sum($b);echo "<br>";//7.移除数组中重复的值array_unique
$input = array(4, 4, "3", 4, 3, "3",1,1,1,2,3,5,4,2,3);$result = array_unique($input);var_dump($result);echo "<br>";//8.对数组进行排序并保持索引关系asort
$fruits = array( "b", "a", "z", "d");asort($fruits);var_dump($fruits);echo "<br>";//9.对数组进行逆向排序并保持索引关系arsort
$fruits = array( "b", "a", "z", "d");arsort($fruits);var_dump($fruits);echo "<br>";//10.键名的正序对数组进行排序ksort
$fruits = array( "b", "a", "z", "d");ksort($fruits);var_dump($fruits);$fruits = array( "b"=>"b", "a"=> "a", "z"=>"z", "d"=>"d");ksort($fruits);var_dump($fruits);echo "<br>";
//11.键名的倒序对数组进行排序krsort
$fruits = array( "b", "a", "z", "d");krsort($fruits);var_dump($fruits);$fruits = array( "b"=>"b", "a"=> "a", "z"=>"z", "d"=>"d");krsort($fruits);var_dump($fruits);echo "<br>"; //12.键值的正序对数组进行排序sort$fruits = array("lemon", "orange", "banana", "apple");sort($fruits);var_dump($fruits);echo "<br>"; //13.键值的倒序对数组进行排序rsort$fruits = array("lemon", "orange", "banana", "apple");rsort($fruits);var_dump($fruits);echo "<br>";//14.把数组中的值赋给一些变量list
$a=array(18,20,25);list($zhangsan,$lisi,$wangwu)=$a;echo $zhangsan;echo"<br>";echo $lisi;echo"<br>";echo $wangwu;?>