todayqq / phperinterviewguide Goto Github PK
View Code? Open in Web Editor NEW相对于 PHPer 新手而言比较有指导意义的 PHPer 面试指南
Home Page: https://todayqq.gitbooks.io/phper/content/
相对于 PHPer 新手而言比较有指导意义的 PHPer 面试指南
Home Page: https://todayqq.gitbooks.io/phper/content/
异步IO、协程、连接池都没提及,何为最全?
第三点
无论删除 软链接 或是 硬链接,对源文件都没有任何影响(未删除可访问)~
PS.
删除源文件,会导致软链接失效,硬链接无影响~
快排算法有种的一个问题, 例如:
$arr = [2,3,2,6,7,1];
当basenum 为2, 而循环体内
foreach ($arr as $v) {
if ($baseNum > $v) {
$leftArr[] = $v;
}
if ($baseNum < $v) {
$rightArr[] = $v;
}
}
当$baseNum=$v时, $v的值会被丢失,不在left,right数组中, 可以通过加入等于的判断条件
$count = count($arr);
for ($i=1; $i<$count; $i++){
if($arr[$i] <= $basic){
$left[] = $arr[$i];
}
else{
$right[] = $arr[$i];
}
}
就能在排序后的数组中包含相等的数了。
在MySQL 5.1及之前的版本,MyISAM才是默认的存储引擎。之后就都是InnoDB了
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