PHP mysql_num_fields() function
Definition and usage
The mysql_num_fields() function returns the number of fields in the result set.
If it fails, it returns false.
Syntax
mysql_num_fields(data)
| Parameter | Description |
|---|---|
| data | Required. Specifies the data pointer to be used. This data pointer is generated by the mysql_query() function. |
Example
<?php
$con = mysql_connect("localhost", "hello", "321");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
$db_selected = mysql_select_db("test_db",$con);
$sql = "SELECT * FROM person";
$result = mysql_query($sql,$con);
echo mysql_num_fields($result);
mysql_close($con);
?>
Output like:
3
