PHP mysqli_fetch_field() Function
Example
Return the next field (column) in the result set, then print each field'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
information for all fields
while
($fieldinfo=mysqli_fetch_field($result))
{
printf("Name: %s\n",$fieldinfo->name);
printf("Table:
%s\n",$fieldinfo->table);
printf("max. Len:
%d\n",$fieldinfo->max_length);
}
// Free result
set
mysqli_free_result($result);
}
mysqli_close($con);
?>
Definition and Usage
The mysqli_fetch_field() function returns the next field (column) in the result set, as an object.
Syntax
mysqli_fetch_field(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 an object containing field definition information.
FALSE if no info is available. The object has the following properties:
|
|---|---|
| PHP Version: | 5+ |
PHP MySQLi Reference
