Get the number of fields (columns) in a result set in PHP
Description
The following code shows how to get the number of fields (columns) in a result set.
Example
//w w w. j ava 2 s .co m
<?php
$con=mysqli_connect("localhost","root","","test");
// Check connection
if (mysqli_connect_errno()){
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$sql="SELECT name,birthday FROM employee";
if ($result=mysqli_query($con,$sql)){
// Return the number of fields in result set
$fieldcount=mysqli_num_fields($result);
printf("Result set has %d fields.\n",$fieldcount);
// Free result set
mysqli_free_result($result);
}
mysqli_close($con);
?>
The code above generates the following result.
