mysqli_num_fields

(PHP 5)

mysqli_num_fields

(no version information, might be only in CVS)

result->field_count --  Get the number of fields in a result

Description

Procedural style:

int mysqli_num_fields ( object result)

Object oriented style (property):

class result {

int field_count

}

mysqli_num_fields() returns the number of fields from specified result set.

Return values

The number of fields from a result set

See Also

mysqli_fetch_field()

Example

Example 1. Object oriented style

<?php
$mysqli
= new mysqli("localhost", "my_user", "my_password", "world");

/* check connection */
if (mysqli_connect_errno()) {
    
printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}

if (
$result = $mysqli->query("SELECT * FROM City ORDER BY ID LIMIT 1")) {

    
/* determine number of fields in result set */
    
$field_cnt = $result->field_count;

    
printf("Result set has %d fields.\n", $field_cnt);

    
/* close result set */
    
$result->close();
}

/* close connection */
$mysqli->close();
?>

Example 2. Procedural style

<?php
$link
= mysqli_connect("localhost", "my_user", "my_password", "world");

/* check connection */
if (mysqli_connect_errno()) {
    
printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}

if (
$result = mysqli_query($link, "SELECT * FROM City ORDER BY ID LIMIT 1")) {

    
/* determine number of fields in result set */
    
$field_cnt = mysqli_num_fields($result);

    
printf("Result set has %d fields.\n", $field_cnt);

    
/* close result set */
    
mysqli_free_result($result);
}

/* close connection */
mysqli_close($link);
?>

The above examples would produce the following output:

Result set has 5 fields.

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