extension state script

<?php
$extension_list=array(100=>100,101=>101,102=>102,103=>103,104=>104,105=>105,106=>106,107=>107,108=>108,109=>109);
foreach($extension_list as $key=> $extension) {

 $output = shell_exec("asterisk -x \" core show hint $extension\" | awk '{print $4}' | awk 'NR==1'");
 $state = substr("$output", -5);
  $state=trim ($state);

if($state=="Idle") {
echo "agent $key $state\n";

}

else {

echo " $key   $output\n";

}

}
?>