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取出数组中最大值解决方案

Jun 13, 2016 pm 01:33 PM
array echo max search

取出数组中最大值
$t=array('1','2','3','4','5');
$result=array_search(max($t),$t);
echo '最大值:'.$result;
  ?>
这个结果为什么显示是4
吐血了

------解决方案--------------------
max($t)是5 
$result=array_search(5,$t);
这是在$t数组中寻找值为5的元素 返回这个元素对应的键。
5存在于这个数组 并且键是4 所以返回4是ok的
数组的键从0开始


你的程序最后一句话改为 echo '最大值的键:'.$result;
------解决方案--------------------
echo '最大值:'. max($t);

何必要画蛇添足的 array_search 呢?

------解决方案--------------------

探讨
$t=array('1','2','3','4','5');
$result=array_search(max($t),$t);
echo '最大值:'.$result;
?>
这个结果为什么显示是4
吐血了
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