adding updated code

sys0-code/api/queue.php

@@ -0,0 +1,66 @@
+<?php
+	function test_queue($link)//function to check if any printer is free and if there are jobs in queue. If yes push jo to printer
+	{
+
+		$sql="select id, from_userid,filepath,print_on from queue order by id";
+		$qid=0;
+		$quserid=0;
+		$qfilepath="";
+		$print_on=0;
+		$stmt = mysqli_prepare($link, $sql);
+		mysqli_stmt_execute($stmt);
+		mysqli_stmt_store_result($stmt);
+		mysqli_stmt_bind_result($stmt, $qid,$quserid,$qfilepath,$print_on);
+		mysqli_stmt_fetch($stmt);
+		$num_of_printers=0;
+		if($print_on==-1)
+			$sql="select count(*) from printer";
+		else
+			$sql="select count(*) from printer where id=$print_on";
+		$stmt = mysqli_prepare($link, $sql);					
+		mysqli_stmt_execute($stmt);
+		mysqli_stmt_store_result($stmt);
+		mysqli_stmt_bind_result($stmt, $num_of_printers);
+		mysqli_stmt_fetch($stmt);
+		$last_id=0;
+		$printers_av=0;
+		if($num_of_printers!=0)
+		{
+			$id=0;
+			$papikey="";
+			$userid=$_SESSION["id"];
+			$username=$_SESSION["username"];
+			$purl="";
+			if($print_on==-1)
+				$sql="Select id,apikey,printer_url from printer where id>$last_id and free=1 order by id";
+			else
+				$sql="Select id,apikey,printer_url from printer where id=$print_on and free=1";
+			//echo $sql;
+			$stmt = mysqli_prepare($link, $sql)mysqli_stmt_execute($stmt);
+			mysqli_stmt_store_result($stmt);
+			mysqli_stmt_bind_result($stmt, $id,$papikey,$purl);
+			mysqli_stmt_fetch($stmt);
+			if($id!=0)
+			{
+				exec('curl -k -H "X-Api-Key: '.$papikey.'" -F "select=true" -F "print=true" -F "file=@'.$qfilepath.'" "'.$purl.'/api/files/local" > /var/www/html/user_files/'.$username.'/json.json');
+				$fg=file_get_contents("/var/www/html/user_files/$username/json.json");
+				$json=json_decode($fg,true);
+				if($json['effectivePrint']==true and $json["effectiveSelect"]==true)
+				{
+					$sql="update printer set free=0, printing=1,mail_sent=0, used_by_userid=$quserid where id=$id";
+					$stmt = mysqli_prepare($link, $sql);				
+					mysqli_stmt_execute($stmt);
+					
+					$sql="delete from queue where id=$qid";
+					$stmt = mysqli_prepare($link, $sql);				
+					mysqli_stmt_execute($stmt);
+				}
+				else
+				{
+				}
+			}
+		}
+	}
+
+?>
+