Errors using new array functions PHP [closed] - php

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Hello All: I do not have much experience with Arrays but am trying to learn. Trying something new and don't know if this can be done this way or not. Essentially what I am trying to do is go through a wp database table; and go through the records; the $postnum value is equivalent to a WP post_id and is in the database multiple times. So I want to just whip through the table and create an array with each post_id ($postnum) in there just once. So I thought, all i need to do is create an array outside of loop; then while in loop just check if the $postnum is already in the array; if it is not just add it…so then all records with that same postnum in them they will not add to the array…
here is my code:
$posts_counted=array();
global $wpdb;
foreach( $wpdb->get_results("SELECT * FROM wp_c93hh3bk23_pvc_daily") as $key => $row) {
$id = $row->id;
$time = $row->time;
$postnum = $row->postnum;
$postcount = $row->postcount;
if (in_array($postnum,$posts_counted)) 
{
array_push($posts_counted,$postnum);
}
} // close out foreach
I have never really used the "in_array" thing or the "array_push" thing either; so these are all new to me…
I am getting: "Parse error: syntax error, unexpected ' ' (T_STRING) in…"
referring to the line "if (in_array($postnum,$posts_counted))"
So I am wondering if anyone can tell me if what I am trying to do can be done this way or what I am doing wrong on this…
Thanks!

Answer 1

This is how I get data from db:
$sql= "Select * FROM table";
$result=mysql_query($sql);
while($rows = mysql_fetchArray($result)){
$data= $rows;
}
//checking if something is in array
if(in_array($data['id')){
//do something
}
//now how you want to get data
// echo json_encode($data)
//OUTPUT: {id:"1",name:"xyz"}
Anyway if you want your "postNum" unique, fix your sql with adding DISTINCT after SELECT.