Example
Set the field cursor to the first field (column) in the result set, then get the field info with mysqli_fetch_field() and print the 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
info for 1st column ("Lastname")
mysqli_field_seek($result,0);
$fieldinfo=mysqli_fetch_field($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_field_seek() function sets the field cursor to the given field offset.
Syntax
mysqli_field_seek(result,fieldnr);
| Parameter | Description |
|---|---|
| result | Required. Specifies a result set identifier returned by mysqli_query() , mysqli_store_result() or mysqli_use_result() |
| fieldnr | Required. Specifies the field number. Must be an integer between 0 and number of fields -1 |
Technical Details
| Return Value: | TRUE on success. FALSE on failure |
|---|---|
| PHP Version: | 5+ |
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