How to Nest

How to nest?
I rookie PHP language has not seen •
The chief asked me to make a URL. Now, a link to jump ·

$id =$_get["id"];
$sql = "SELECT list from list where id= $id";

$query 1=mysql_query ($sql);
$SLQ 1= "Select content from $query";
$query =mysql_query ($sql 1);

while ($array =mysql_fetch_array ($query)) {
?>
I don't write it back.

Run says SLQ1 no definition ·
$SLQ 1= "Select content from $query";
$query How to write a consult ·

------Solution--------------------
$sql = "SELECT list from list where id=". $id;

Isn't that okay?
------Solution--------------------
$SLQ 1= "Select content from $query";
$query =mysql_query ($sql 1);

The variable name is incorrectly written.

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