Home Backend Development PHP Tutorial PHP中使用glob函数实现一句话删除某个目录下的所有文件_php技巧

PHP中使用glob函数实现一句话删除某个目录下的所有文件_php技巧

May 16, 2016 pm 08:39 PM
glob function php

收集自网上:

复制代码 代码如下:

array_map('unlink',glob('*'));

抛砖引玉而已,有很多朋友可能还不知道有glob这个函数吧。更多的用法看手册吧。

PHP glob() 函数

定义和用法

glob() 函数返回匹配指定模式的文件名或目录。
该函数返回一个包含有匹配文件 / 目录的数组。如果出错返回 false。

语法

复制代码 代码如下:

glob(pattern,flags)

参数 描述
file 必需。规定检索模式。
size

可选。规定特殊的设定。

  • GLOB_MARK - 在每个返回的项目中加一个斜线
  • GLOB_NOSORT - 按照文件在目录中出现的原始顺序返回(不排序)
  • GLOB_NOCHECK - 如果没有文件匹配则返回用于搜索的模式
  • GLOB_NOESCAPE - 反斜线不转义元字符
  • GLOB_BRACE - 扩充 {a,b,c} 来匹配 'a','b' 或 'c'
  • GLOB_ONLYDIR - 仅返回与模式匹配的目录项
  • GLOB_ERR - 停止并读取错误信息(比如说不可读的目录),默认的情况下忽略所有错误

注释:GLOB_ERR 是 PHP 5.1 添加的。

使用例子

例子 1

复制代码 代码如下:
print_r(glob("*.txt"));
?>

输出类似:
复制代码 代码如下:
Array
(
[0] => target.txt
[1] => source.txt
[2] => test.txt
[3] => test2.txt
)

例子 2
复制代码 代码如下:
print_r(glob("*.*"));
?>

输出类似:
复制代码 代码如下:
Array
(
[0] => contacts.csv
[1] => default.php
[2] => target.txt
[3] => source.txt
[4] => tem1.tmp
[5] => test.htm
[6] => test.ini
[7] => test.php
[8] => test.txt
[9] => test2.txt
)

Ps:这是一个神奇的函数。
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