


I read a chapter about files and folders on the subway this morning. I just recently understood the Linux file system and felt that accessing file attributes is very similar to Shell commands, so I wanted to practice it in the evening.
I found that PHP's folder function did not seem to provide traversal of all files in a folder (including files in subdirectories), so I wanted to implement one myself.
While writing, I found that some functions for operating folders were not what I thought. For example, dirname() gets the path to the folder where the file is based on the complete file path provided, but if you pass in a folder, it gets its parent folder. This needs to be understood. The same is true for basename(). If you pass in the folder path, you will get the name of the folder. The results returned by these two functions do not end with '/'
<?php $dirPath='/home/WWW/Test';//目录,结尾不加'/‘ //执行遍历 recursion_readdir($dirPath); /** *@summary 重复times次字符char *@param $char 需要重复的字符 *@param $times 重复次数 *@return 返回重复字符组成的字符串 */ function forChar($char='-',$times=0){ $result=''; for($i=0;$i<$times;$i++){ $result.=$char; } return $result; } /** *@summary 递归读取目录 *@param $dirPath 目录 *@param $Deep=0 深度,用于缩进,无需手动设置 *@return 无 */ function recursion_readdir($dirPath,$Deep=0){ $resDir=opendir($dirPath); while($basename=readdir($resDir)){ //当前文件路径 $path=$dirPath.'/'.$basename; if(is_dir($path) AND $basename!='.' AND $basename!='..'){ //是目录,打印目录名,继续迭代 echo forChar('-',$Deep).$basename.'/<br/>'; $Deep++;//深度+1 recursion_readdir($path,$Deep); }else if(basename($path)!='.' AND basename($path)!='..'){ //不是文件夹,打印文件名 echo forChar('-',$Deep).basename($path).'<br/>'; } } closedir($resDir); }
The above implementation method of PHP recursively traversing files in a specified folder is all the content shared by the editor. I hope it can give you a reference, and I also hope that you will pay more attention to the PHP Chinese website.
For more related articles on how to implement PHP recursive traversal of files in a specified folder, please pay attention to the PHP Chinese website!

php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

在php中,可以使用substr()函数来读取字符串后几个字符,只需要将该函数的第二个参数设置为负值,第三个参数省略即可;语法为“substr(字符串,-n)”,表示读取从字符串结尾处向前数第n个字符开始,直到字符串结尾的全部字符。

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\ \;||\xc2\xa0)/","其他字符",$str)”语句。

查找方法:1、用strpos(),语法“strpos("字符串值","查找子串")+1”;2、用stripos(),语法“strpos("字符串值","查找子串")+1”。因为字符串是从0开始计数的,因此两个函数获取的位置需要进行加1处理。


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

SublimeText3 Chinese version
Chinese version, very easy to use

SublimeText3 English version
Recommended: Win version, supports code prompts!

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

Dreamweaver CS6
Visual web development tools

WebStorm Mac version
Useful JavaScript development tools