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How to create a file of a given size (regardless of content) in PHP?
I have to create a file larger than 1GB. Maximum approximately 4-10GB
If the contents of the file are not relevant, just populate it - but make sure you don't generate variables that are too large to hold in memory:
0) { fputs($fh, str_pad('', min($chunk,$size))); $size -= $chunk; } fclose($fh);
If the file must be read by something else - then how you do it depends on what else needs to read it.
C.
You can use fopen and fseek
fopen
fseek
define('SIZE',100); // size of the file to be created. $fp = fopen('somefile.txt', 'w'); // open in write mode. fseek($fp, SIZE-1,SEEK_CUR); // seek to SIZE-1 fwrite($fp,'a'); // write a dummy char at SIZE position fclose($fp); // close the file.
When executing:
$ php a.php $ wc somefile.txt 0 1 100 somefile.txt $
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
If the contents of the file are not relevant, just populate it - but make sure you don't generate variables that are too large to hold in memory:
0) { fputs($fh, str_pad('', min($chunk,$size))); $size -= $chunk; } fclose($fh);If the file must be read by something else - then how you do it depends on what else needs to read it.
C.
You can use
fopenandfseekdefine('SIZE',100); // size of the file to be created. $fp = fopen('somefile.txt', 'w'); // open in write mode. fseek($fp, SIZE-1,SEEK_CUR); // seek to SIZE-1 fwrite($fp,'a'); // write a dummy char at SIZE position fclose($fp); // close the file.When executing: