While file is NOT readable problem

[bschultz]

How do I write a bit of code to check if a file is NOT readable...and if (and only if) it is NOT readable (doesn't exist) , wget the file.

 

Here's what I tried...but it loops forever and ever...even if the file does exist.

 

$filename = "file.mp3";
while(!is_readable($filename))
  {
$url = "domain.com" . ".mp3";
echo system('wget '.escapeshellcmd($url));
echo system('sleep 30'); 
  }

?>

 

I Googled...and couldn't find the correct syntax for IS NOT READABLE.  Thanks!

[drisate]

You should use file_exists() instead

Why do you need to use while?

Theres only one to check.

 

if (file_exists($filename)){
$url = "domain.com" . ".mp3";
echo system('wget '.escapeshellcmd($url));
echo system('sleep 30'); 
}

 

If you have more then one then you can do something like

 

<?php

// Build an array of your files
$filename[] = "file1.mp3";
$filename[] = "file2.mp3";
$filename[] = "file3.mp3";
$filename[] = "file4.mp3";
$filename[] = "file5.mp3";

foreach($filename as $file => $value){
if (file_exists($value)){
//[..] continue with your code using $value for the file name
}
}

?>

 

[bschultz]

Since wget fails (and stops) on a 404 error, I want to run a cron job to see if the file exists locally...and if not, try to download it. 

 

So, while the file does not exist (or is not readable)...continue trying to wget it.

 

My code above was wrong...where it says domain.com, should be the local file system.

[bschultz]

I've figured this out via a shell script to execute the php download script if the file doesn't exist...but I don't like running two scripts when one should work.

 

Oh well...thanks for the help.