What is PhpDig?
PhpDig is a PHP MySQL based
Web Spider & Search Engine.



mysql_fetch_lengths — Gets the length of each field in a row.


array mysql_fetch_lengths(result handle);
mysql result result handle: Result handle returned by mysql_db_query() or mysql_query()


Array of integers; FALSE on error


mysql_fetch_lengths() fetches the length of each field for the last row of data retrieved by mysql_fetch_array() , mysql_fetch_assoc() , mysql_fetch_object() , or mysql_fetch_row() . The length information is returned in a numerically keyed array.


PHP 3+, PHP 4+

See also

To find the number of fields in a result set:


To find the number of rows in a result set:



Example 807. Fetch all column data from a result handle returned by mysql_query()

// Included code that connects to a MySQL server and sets a default database
// See the MySQL Functions chapter introduction for the source code for the file
include ('');

// Simple EXPLAIN query
$query = "EXPLAIN SELECT * FROM user";

// Run the query
$mysql_result = @ mysql_query ($query)
    or die ("Query '$query' failed with error message: \"" . mysql_error () . '"');

// Grab the data from the result handle
$row = mysql_fetch_assoc ($mysql_result);

// Display the contents of the row
print_r ($row);
// Display the lengths of the fields in the row
$row_field_lengths = mysql_fetch_lengths ($mysql_result);
print_r ($row_field_lengths);

PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at The authors of this book have elected not to choose any options under the OPL. This online book was obtained from and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.

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