PHP File Operations Summary (delete the specified file/Get folder under the file name/Read folder under the picture name), _php tutorial

PHP File Operations Summary (delete the specified file/Get folder under the file name/read the folder name),

This paper analyzes the methods of PHP file operation. Share to everyone for your reference, as follows:

First, delete the file

Unlink ()

Syntax: int unlink (string filename);

return value: Integer

Function type: file access. Such as:

Unlink ("Tmp/test.txt");

Second, get the file name under the folder

$dir = "message/"; The name of the folder if (Is_dir ($dir)) {  if ($dh = Opendir ($dir)) {while    (($file = Readdir ($DH))!== false) {      
";    }    Closedir ($DH);  }}

Third, read the picture name under the folder

<?php$handle = Opendir (' images/'); Current directory while  (false!== ($file = Readdir ($handle))) {//traverse the directory where the php file   is located list ($filesname, $KZM) =explode (".", $file) ;//Get extension    if ($kzm = = "gif" or $kzm = = "jpg" or $kzm = = "jpg") {//File filter     if (!is_dir ('./'. $file)) {//folder filter      $array [] = $file;//Put the eligible file name into the array      $i ++;//record the total number of pictures}}}  print_r ($array);? >

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I hope this article is helpful to you in PHP programming.

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