Detailed explanation of how PHP uses one line of code to delete all files in a directory

This article mainly introduces to you the relevant information about how PHP uses one line of code to delete all files in a directory. The article first gives a brief introduction to the glob function, and then introduces the deletion method in great detail through the example code. You need Friends can refer to it. Let’s take a look below. I hope it can help everyone.

Preface

I think many people will write a few lines or even dozens of lines of code to list all files into an array for deletion, but the glob function solves the problem in minutes! Let’s take a look at the detailed introduction below.

glob syntax description:

array glob ( string $pattern [, int $flags = 0 ] )

glob() function searches for all file paths matching pattern according to the rules used by libc glob() function, similar to the rules used by general shells. No abbreviation expansion or parameter substitution is performed. Glob is powerful in using regular path matching.

flags Valid flags are:

• GLOB_MARK - Add a slash

• ## to each returned item #GLOB_NOSORT - Return the files in their original order of appearance in the directory (not sorted)

• GLOB_NOCHECK - Return the pattern used to search if no files match

• GLOB_NOESCAPE - Backslash does not escape metacharacters

• GLOB_BRACE - Expands {a,b,c} to match 'a', 'b' or 'c'

• GLOB_ONLYDIR - Return only directory entries that match the pattern

• GLOB_ERR - Stop and read with an error message (say an unreadable directory), By default all errors are ignored

Example 1

<?php print_r(glob("*.txt"));
?>

Output similar to:

Array
(
[0] => target.txt
[1] => source.txt
[2] => test.txt
[3] => test2.txt
)

Example 2

<?php print_r(glob("*.*"));
?>

Output is similar:

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
)

Delete all files in the directory

array_map('unlink', glob('*'));

Related recommendations:

php The following types Summary of methods to delete a directory

PHP deletes a directory and all subordinate directories and file codes in the directory

php custom function rrmdir recursively deletes a directory with files in the directory

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