为什么这个快速排序在浏览器中没有显示任何东西? - Why doesn't this quicksort show anything in the browser?

Why doesn't this quicksort show anything in the browser?

<?php
error_reporting(E_ALL);
function quicksort($seq) 
{
    if(!count($seq)) {return $seq;}
    $pivot= $seq[0];
    $low = $high = array();
    $length = count($seq);
    for($i=1; $i < $length; $i++) 
    {
        if($seq[$i] <= $pivot) 
        {
            $low []= $seq[$i];
        } else {
            $high []= $seq[$i];
               }
    }
    return array_merge(quicksort($low), array($pivot), quicksort($high));
 $numbers = array(2,5,6,8,3,6,4,45,23,456,23,6,90,5,2,156,2,1,3,12,48,561,1,168);
 $words = array('gr','sdfg','ik','shrt','jy','bcnv',' 0','0','01','_a','ass');

 print_r(quicksort($numbers));
 print_r(quicksort($words));

highlight_file(quicksort.php);
?>

屏幕空白。PHP错误日志显示文件结束异常。我很累，可能会忽略一个分号，但我找不到它。

在函数定义的末尾缺少一个大括号

将您的函数替换为…

function quicksort($seq) 
{
    if(!count($seq)) {return $seq;}
    $pivot= $seq[0];
    $low = $high = array();
    $length = count($seq);
    for($i=1; $i < $length; $i++) 
    {
        if($seq[$i] <= $pivot) 
        {
            $low []= $seq[$i];
        } else {
            $high []= $seq[$i];
        }
    }
    return array_merge(quicksort($low), array($pivot), quicksort($high));
}