How to replace exec () through system command in php? - php

Question

My Coding is so far:
How to replace exec() through system command in php?
if($str!="success")
{
$cmd = "rm -rf /portal/data/config/certificate/tmp/";
$error_text="Command : ".$cmd;
AddLog("sslconfig.php",$error_text,ERR_DEBUG_HIGH);
$output = exec($cmd,$array1,$error_code);
$error_text="Error code : ".$error_code;
AddLog("sslconfig.php",$error_text,ERR_DEBUG_HIGH);
seterror('0:|: :|: Could not apply certificate.');
$error_text="Could not apply certificate";
AddLog("sslconfig.php",$error_text,ERR_INFO);
header("Location: ssl.php");
exit;
}
if($certName==$cert_auth)
{
//copy the applied certificate to fireballbundle.crt
//$output = copysslfb("/portal/data/config/certificate/".$newfile.".crt");
$error_text="Selfsigned Certicate";
AddLog("sslconfig.php",$error_text,ERR_DEBUG_HIGH);
$output="success";
}
else
{
$error_text="Not Selfsigned Certicate";
AddLog("sslconfig.php",$error_text,ERR_DEBUG_HIGH);
$output="success";
}
if($output!="success")
{
$cmd = "rm -rf /portal/data/config/certificate/tmp/";
$error_text="Command : ".$cmd;
AddLog("sslconfig.php",$error_text,ERR_DEBUG_HIGH);
$output = exec($cmd,$array1,$error_code);
$error_text="Error code : ".$error_code;
AddLog("sslconfig.php",$error_text,ERR_DEBUG_HIGH);
$error_text="Could not add certificate to fireballbundle.crt : ".$output;
AddLog("sslconfig.php",$error_text,ERR_ERROR);
seterror('0:|: :|: Error in applying certificate.');
header("Location: ssl.php");
exit;
}
Now I want to replace exec command with system command ?
I am using three times exec() here as shown as above code now i want to replace with system () command in php
exec("hostname",$retval);
$output = exec($cmd,$array1,$error_code);
exec($cmd,$array1,$error_code);

Answer 1

To remove a single file, you should use unlink and to remove a directory you should use rmdir. In the comments on those pages, you will find many different ways to emulate rm -rf through these functions.
You should avoid using system or exec as much as is possible. Always look on php.net and google to see if you can find a way to do whatever you're trying to do with a built-in function or library. You have no need to use these facilities here.
What hostname returns you should probably use $_SERVER['SERVER_NAME'] for instead.