$_GET shows also another page - php

Question

I've discoverd a bug into my script. I will try to explain it.
I've made 2 pages into category.php
This one here below shows all content related to a category:
/category.php?nameID=Test
When I go to the first content related to this category for example:
/category.php?nameID=Test&id=2 I receive information from MYSQL about post ID 2, also all posts related to that category named 'test' below. Which I clearly don't want to get. only the Post ID
<?php
// BEGIN OF SHOWING CONTENT PAGE
if (isset($_GET['id'])){
$naamID = mysql_real_escape_string($_GET['nameID']);
$id = mysql_real_escape_string($_GET['id']);
$idnext = $id + 1;
$gn = (" SELECT * FROM category WHERE name='".$naamID."'") or die(mysql_error());
$go = (" SELECT * FROM post WHERE id='".$id."'") or die(mysql_error());
$gnn = mysql_query($gn) or die(mysql_error());
$goo = mysql_query($go) or die(mysql_error());
$gnnn = mysql_fetch_array($gnn);
$gooo = mysql_fetch_array($goo);
?>
<?php
echo '<p>';
if(empty($gooo['youtube'])){
} else {
?> <h1> <?php echo htmlspecialchars($gooo["title"]); ?> </h1><br />
<?php
$fullurl1 = $gooo['youtube'];
$videoid1=substr($fullurl1,-11);
?>
<?php
echo '<p><i>Edit this post</i><br />';
echo '<iframe width="560" height="315" src="//www.youtube.com/embed/'.$videoid1.'" frameborder="0" allowfullscreen></iframe><br />';
echo '</p>';
}
if(empty($gooo['pic'])){
} else {
?> <h1> <?php echo htmlspecialchars($gooo["title"]); ?> </h1><br />
<?php
echo '<p><i>Edit this post</i><br />';
echo '<img src="'.$gooo["pic"].'" style="max-height: auto; max-width: 600px;"/><br></p>';
}
echo '</p>';
}
?>

Answer 1

I dont know what you exactly want please be specific
But your code should be like this ->
$gnn = mysql_query("SELECT * FROM category WHERE name='$naamID'") or die(mysql_error());
$goo = mysql_query("SELECT * FROM post WHERE id= $id ") or die(mysql_error());
$gnnn = mysql_fetch_array($gnn);
$gooo = mysql_fetch_array($goo);
The above code will fetch only one row from each table. Also you had put $id in single quotes that makes it a string
Comment below if you need more help