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PHP Quiz PHP CertificatePHP mysqli_field_count() Function
Example
Assume we have a "Friends" table that has 3 fields and 20 rows. Return the number of columns for the most recent query:
<?php
$con=mysqli_connect("localhost","my_user","my_password","my_db");
// Check connection
if (mysqli_connect_errno($con))
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
mysqli_query($con,"SELECT * FROM Friends");
// Get number of columns - will always return 3
mysqli_field_count($con);
mysqli_close($con);
?>
$con=mysqli_connect("localhost","my_user","my_password","my_db");
// Check connection
if (mysqli_connect_errno($con))
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
mysqli_query($con,"SELECT * FROM Friends");
// Get number of columns - will always return 3
mysqli_field_count($con);
mysqli_close($con);
?>
Definition and Usage
The mysqli_field_count() function returns the number of columns for the most recent query.
Syntax
mysqli_field_count(connection);
| Parameter | Description |
|---|---|
| connection | Required. Specifies the MySQL connection to use |
Technical Details
| Return Value: | Returns an integer that represents the number of columns in the result set |
|---|---|
| PHP Version: | 5+ |
PHP MySQLi Reference
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