Explain the example code for creating files in PHP_PHP tutorial

Explain the example code for creating files in php:

2. $data =date("Ymd");
3. $dir ="/hom/kyle/file/$data";
4. $filename ="/home/kyle/file/$data/testfile";
5. $filecontent ="This is what to write The entered content tests the space ";
6. //Determine whether the folder exists, otherwise create it
7. if(!is_dir($dir)){
8. mkdir($dir ,0777);
9. }
10. //Determine whether the file exists, otherwise create it
11. if(!file_exists($filename)){ $handle=fopen($filename, w);
12. if(!$handle){
13. echo create file fail;
14. exit;
15. }else{
16. chmod($filename,0777);
17. }
18. if(fwrite($handle, $filecontent) === FALSE) {
19. echo "cant write into $filename ";
20. exit;
21. }
22. fclose($handle);
23. }
24. ?>

http://www.bkjia.com/PHPjc/486174.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/486174.htmlTechArticleExplains the example code for creating files in PHP: ?php $data =date("Ymd"); $dir ="/ hom/kyle/file/$data"; $filename ="/home/kyle/file/$data/testfile"; $filecontent ="This is the content to be written to test...