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Old 04-28-2006, 04:12 PM   #1
Registered: Apr 2006
Location: Portsmouth
Distribution: CentOS & Ubuntu
Posts: 49

Rep: Reputation: 15
Apache And Iptables - Help Please

i am trying to generate a script that will input an ip address "" and output the results. The following code works fine if i declare the ip address in the code, but if i want to include it as a string it doesnt work?

#$ip = $_POST['ip_address_dia'];

exec('ping -c 4', $cmdOutput);
foreach ($cmdOutput as $outputLine) {
echo $outputLine;

#header ("Location: Diagnostic.php");

If i change it to include the string:
exec('ping -c 4 '$ip'', $cmdOutput);

this is the error i get:
Parse error: parse error, unexpected T_VARIABLE in /var/www/html/Diagnostic_session.php on line 4

could someone help me out, i would release appriciate it.

Old 04-28-2006, 06:32 PM   #2
Registered: May 2004
Location: Iowa USA
Distribution: CentOS
Posts: 419

Rep: Reputation: 30
Instead of
PHP Code:
exec('ping -c 4 '$ip''$cmdOutput); 
PHP Code:
exec("ping -c 4 $ip"$cmdOutput); 
Variables inside single-quotes aren't interpolated, so your original code would be like literally asking the system to

ping -c 4 $ip

Variables inside double-quotes get interpolated, so the suggested code would be (assuming $ip is assigned, e.g.,

ping -c 4


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