Nomal telnet command works, but in ftp_connect dont work

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Windows

PHP

I am trying to write a php script to check ftp connectivity to my hosts. from command prompt i can telnet to the host with port 21,, but fails in PHP code with ftp_connect.

Could some on please help with your input..

What I have tried:

Sample code hi here:

$ftp="100.1.1.2","100.2.3.3"
for( $i=0;$i< $counts;$i++)
{
if (@ftp_connect($ftp[$i],21,2))
{
echo "success"
}
else
{
echo "failed"
}
}