Example
Get field info for all fields, then get the current field with mysqli_field_tell() and print each column's name, table, and max length:
<?php
$con=mysqli_connect("localhost","my_user","my_password","my_db");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$sql="SELECT Lastname,Age FROM Persons ORDER BY Lastname";
if ($result=mysqli_query($con,$sql))
{
// Get
field info for all fields
while
($fieldinfo=mysqli_fetch_field($result))
{
// Get field cursor position
$currentfield=mysqli_field_tell($result);
printf("Column %d:\n", $currentfield);
printf("Name:
%s\n", $fieldinfo->name);
printf("Table: %s\n",
$fieldinfo->table);
}
// Free result
set
mysqli_free_result($result);
}
mysqli_close($con);
?>
Definition and Usage
The mysqli_field_tell() function returns the position of the field cursor.
Syntax
mysqli_field_tell(result);
| Parameter | Description |
|---|---|
| result | Required. Specifies a result set identifier returned by mysqli_query() , mysqli_store_result() or mysqli_use_result() |
Technical Details
| Return Value: | Returns the current offset of the field cursor |
|---|---|
| PHP Version: | 5+ |
< PHP MySQLi Reference