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Homephp教程php手册PHP 讲解两种中数组排序函数使用方法

PHP 讲解两种中数组排序函数使用方法

Jun 13, 2016 am 10:39 AM
arrayphponeforInstructionsfunctionparameterreversesortnumberarrayexplain

array_reverse() 反向排序函数
函数传入参数为一数组,返回一个与传入参数值相同但顺序相反的数组。
$a = array(1,2,3,4,5);
$a = array_reverse($a);
for ($i=0; $iecho $a[$i]." ";
?>
结果为:
5 4 3 2 1

shuffle()  随机排序代码函数
函数对传入的数组进行随机排序,成功返回TRUE,否则返回FALSE。
$a = array(1,2,3,4,5);
shuffle($a);
for ($i=0; $iecho $a[$i]." ";
shuffle($a);
echo "
";
for ($i=0; $iecho $a[$i]." ";
?>
两次调用返回的结果:
4 1 2 5 3
1 5 2 4 3

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