How can I echo the position number of SQL row in PHP? - php

Question

Before you misread the title... I'm not asking how to echo the number of rows, I'm simply looking to find the position that the row is in.
Let's say we have five total rows:
+---------------------+
| Post ID | Author |
+---------------------+
| 463 | Me |
| 477 | Me |
| 718 | Me |
| 883 | Me |
| 276 | Me |
+---------------------+
Now I'd like to get the position of the row that contains the post ID of 718. From looking at the data, we can visually see that it is the third row in the data. How can I echo this in PHP?

Answer 1

when you fetch records, you may use a variable as position number.
#DB is a class connect to mysql database.
DB::init();
$sql = "SELECT * FROM RowNo ";
$stmt = DB::query( $sql );
$i = 1;
while( $rec1 = $stmt->fetch() ) {
echo "row $i : ";
print_r( $rec1 );
echo '<BR>'.PHP_EOL;
$i++;
};
result :
row 1 : Array ( [Post ID] => 8788277463 [Author] => Me )
row 2 : Array ( [Post ID] => 2894728477 [Author] => Me )
row 3 : Array ( [Post ID] => 3898994718 [Author] => Me )
row 4 : Array ( [Post ID] => 4891784883 [Author] => Me )
row 5 : Array ( [Post ID] => 1185819276 [Author] => Me )

Answer 2

You may use row_number :
#1. ORDER BY Post ID
SELECT * , row_number() over ( order by Post ID ) FROM RowNo order by Post ID asc
Post ID Author row_number() over ( order by `Post ID` )
1185819276 Me 1
2894728477 Me 2
3898994718 Me 3
4891784883 Me 4
8788277463 Me 5
#2. ORDER BY Post ID DESC
SELECT * , row_number() over ( order by Post ID desc ) FROM RowNo order by Post ID desc
Post ID Ascending 1 Author row_number() over ( order by `Post ID` desc )
8788277463 Me 1
4891784883 Me 2
3898994718 Me 3
2894728477 Me 4
1185819276 Me 5
#3. ORDER BY part of Post ID
SELECT * , substr(Post ID, 4, 2), row_number() over ( order by substr(Post ID, 4, 2) ) FROM RowNo order by substr(Post ID, 4, 2) asc
Post ID Author substr(`Post ID`, 4, 2) Ascending 1 row_number() over ( order by substr(`Post ID`, 4, 2) )
4891784883 Me 17 1
2894728477 Me 47 2
1185819276 Me 58 3
8788277463 Me 82 4
3898994718 Me 89 5