งงกับเครื่องหมาย ` ของmysql พอใส่ Query ได้ พอไม่ใส่ Query ไม่ได้

<?php
////////////////////////////////////
/////////*Page Config Zone*/////////
////////////////////////////////////
$pagename = "Killer Check";
$pageperm = "servermember";
?>
<?php require("../header.php"); ?>
<h2 align="center"><strong>ประวัติการถูกฆ่าภายใน SERVER</strong></h2><br><br>
<?
if($dbcon["serverurl"]["logblock"]==FALSE)
{
	?>
    <h2>ERROR : ไม่สามารถติดต่อไปยัง ฐานข้อมูลในขณะนี้</h2>
    <?php
	exit;
}
	$sql= "SELECT * FROM `lb-players` WHERE playername = '".$player["username"]."'";
	$ppp=mysqli_query($dbcon["serverurl"]["logblock"],$sql);
	if($ppp==FALSE)
{
	?>
    <h2>ERROR : SQL Query ERROR <br><?=$sql?></h2>
    <?php
	//exit;
}
	$ppp=mysqli_fetch_array($ppp);
	$lbplayerid=$ppp["playerid"];
	$strSQL = "SELECT * FROM `lb-S2-kills` WHERE victim = '".$lbplayerid."'";
	$objQuery = mysqli_query($dbcon["serverurl"]["logblock"],$strSQL);
	$Num_Rows = mysqli_num_rows($objQuery);


	$Per_Page = 50;   // Per Page

	$Page = $_GET["Page"];
	if(!$_GET["Page"])
	{
		$Page=1;
	}

	$Prev_Page = $Page-1;
	$Next_Page = $Page+1;

	$Page_Start = (($Per_Page*$Page)-$Per_Page);
	if($Num_Rows<=$Per_Page)
	{
		$Num_Pages =1;
	}
	else if(($Num_Rows % $Per_Page)==0)
	{
		$Num_Pages =($Num_Rows/$Per_Page) ;
	}
	else
	{
		$Num_Pages =($Num_Rows/$Per_Page)+1;
		$Num_Pages = (int)$Num_Pages;
	}


	$strSQL .=" LIMIT $Page_Start , $Per_Page";
	$objQuery  = mysqli_query($dbcon["serverurl"]["logblock"],$strSQL);

	?>
	<table class="table table-bordered">
	  <tr>
		<th class="span1"> <div class="text-center">ผู้ฆ่า</div></th>
		<th class="span1"> <div class="text-center">อาวุธที่ใช้ฆ่า</div></th>
		<th class="span1"> <div class="text-center">เวลา</div></th>
        <th class="span1"> <div class="text-center">X</div></th>
        <th class="span1"> <div class="text-center">Y</div></th>
        <th class="span1"> <div class="text-center">Z</div></th>
	  </tr>
<?php
	while($objResult = mysqli_fetch_array($objQuery))
	{
		$pp="SELECT * FROM `lb-players` WHERE playerid = '".$objResult["id"]."'";
		$ppp=mysqli_fetch_array(mysqli_query($dbcon["serverurl"]["logblock"],$pp));
	?>
	  <tr>
        <td><div class="text-center"><?=$ppp["playername"];?></div></td>
        <td><div class="text-center"><?=$pp;?></div></td>
        <td><div class="text-center"><?=$objResult["date"];?></div></td>
        <td><div class="text-center"><?=$objResult["x"];?></div></td>
        <td><div class="text-center"><?=$objResult["y"];?></div></td>
        <td><div class="text-center"><?=$objResult["z"];?></div></td>
	  </tr>
	<?
	}
	?>
	</table>
	<br>
	ทั้งหมด <?= $Num_Rows;?> รายการ : <?=$Num_Pages;?> Page :
	<?
	if($Prev_Page)
	{
		echo " <a href='$_SERVER[SCRIPT_NAME]?Page=$Prev_Page&keyword=$_GET[keyword]'><< Back</a> ";
	}

	for($i=1; $i<=$Num_Pages; $i++){
		if($i != $Page)
		{
			echo "[ <a href='$_SERVER[SCRIPT_NAME]?Page=$i&keyword=$_GET[keyword]'>$i</a> ]";
		}
		else
		{
			echo "<b> $i </b>";
		}
	}
	if($Page!=$Num_Pages)
	{
		echo " <a href ='$_SERVER[SCRIPT_NAME]?Page=$Next_Page&keyword=$_GET[keyword]'>Next>></a> ";
	}
	?>
<?php require("../footer.php"); ?>

while($objResult = mysqli_fetch_array($objQuery))
	{
		$pp="SELECT * FROM `lb-players` WHERE playerid = '".$objResult["id"]."'";
		$ppp=mysqli_fetch_array(mysqli_query($dbcon["serverurl"]["logblock"],$pp));
	?>
	  <tr>
        <td><div class="text-center"><?=$ppp["playername"];?></div></td>
        <td><div class="text-center"><?=$pp;?></div></td>
        <td><div class="text-center"><?=$objResult["date"];?></div></td>   //ผิดดดดดดดดดดดดดด
        <td><div class="text-center"><?=$objResult["x"];?></div></td>        //ผิดดดดดดดดดดดดดด
        <td><div class="text-center"><?=$objResult["y"];?></div></td>        //ผิดดดดดดดดดดดดดด
        <td><div class="text-center"><?=$objResult["z"];?></div></td>        //ผิดดดดดดดดดดดดดด
	  </tr>
	<?
	}
	?>