ปัญหานำตัวแปรในลูปมาใช้งานนอกลูปต่อค่าตัวแปรไม่เหมือนกันต้องแก้ไขอย่างไรให้ค่าตัวแปรนอกลูปมีค่าเท่ากับตัวแปรในลูป

<?php
	
	$template_username = "'"."$"."username"."'";
		$template_password = "'"."$"."password"."'";
		$template_query = "SELECT * FROM users WHERE username = $template_username AND password =                    $template_password";
		$query_old = "$template_query";
		

		
$string = $query_old;
$array = array("SELECT","FROM","WHERE");
foreach ($array as $token1) {
    if (stristr($string, $token1) !== FALSE) {
		
        echo $token1;
		
    }
}
	$count_single_qoute_old = substr_count($query_old,"'");
	echo "<br>";
		echo $count_single_qoute_old;

$user="admin";
$pass="123456";

		$query_new = "SELECT * FROM users WHERE username =  '$user' AND PASSWORD =  '$pass'";
		$string = $query_new;
		echo "<br>";
		foreach ($array as $token2) {
    if (stristr($string, $token2) !== FALSE) {
		
        echo $token2;
		


		
		
    }
	
}
	$count_single_qoute_new = substr_count($query_new,"'");
	echo "<br>";
		echo $count_single_qoute_new;

	
echo "<br>";
echo "=================================";
echo "<br>";
if(($token1=$token2) and ($count_single_qoute_old=$count_single_qoute_new)) 
echo "True";
echo "<br>";
else
{
echo "<br>";
echo "false";
echo "<br>";
}
echo "<br>";
?>