`mysql_fetch_assoc`

mysql_fetch_assoc
Fetch a result row as an associative array

Description

array mysql_fetch_assoc(resource result);

Returns an associative array that corresponds to the fetched row and moves the internal data pointer ahead. mysql_fetch_assoc is equivalent to calling mysql_fetch_array with MYSQL_ASSOC for the optional second parameter. It only returns an associative array.

Parameters

result: The result resource that is being evaluated. This result comes from a call to mysql_query.

Return Values

Returns an associative array of strings that corresponds to the fetched row, or FALSE if there are no more rows.

If two or more columns of the result have the same field names, the last column will take precedence. To access the other column(s) of the same name, you either need to access the result with numeric indices by using mysql_fetch_row or add alias names. See the example at the mysql_fetch_array description about aliases.

Examples

Example 20.35. An expanded mysql_fetch_assoc example

<?php
$conn = mysql_connect('localhost', 'mysql_user', 'mysql_password');
if (!$conn) {
 echo 'Unable to connect to DB: ' . mysql_error();
 exit;
}
if (!mysql_select_db('mydbname')) {
 echo 'Unable to select mydbname: ' . mysql_error();
 exit;
}
$sql = 'SELECT id as userid, fullname, userstatus 
 FROM sometable
 WHERE userstatus = 1';
$result = mysql_query($sql);
if (!$result) {
 echo 'Could not successfully run query ($sql) from DB: ' . mysql_error();
 exit;
}
if (mysql_num_rows($result) == 0) {
 echo 'No rows found, nothing to print so am exiting';
 exit;
}
// While a row of data exists, put that row in $row as an associative array
// Note: If you're expecting just one row, no need to use a loop
// Note: If you put extract($row); inside the following loop, you'll
// then create $userid, $fullname, and $userstatus while ($row = mysql_fetch_assoc($result)) {
 echo $row['userid'];
 echo $row['fullname'];
 echo $row['userstatus'];
}
mysql_free_result($result);
?>

Notes

Performance

An important thing to note is that using mysql_fetch_assoc is not significantly slower than using mysql_fetch_row, while it provides a significant added value.Note

Field names returned by this function are case-sensitive.Note

This function sets NULL fields to the PHP NULL value.