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



dbmfirstkey — Gets the first key in a DBM file.


string dbmfirstkey(identifier);
int identifier: DBM identifier


Value of the first key; FALSE if the file is empty


Returns the value of the first key in the DBM file. Records are not ordered by value or in lexical order, so use this function to rewind the DBM pointer. By using a combination of dbmnextkey() and other associative array functions, you can sort the contents of the array. For an example, see dbmnextkey() .


Existing since version 3.0


Example 237. Return the first key value

if (!$dbm = dbmopen("testdb", "n")) {
    echo "Could not create DBM file!\n";
dbminsert($dbm, "a", "z");
dbminsert($dbm, "b", "y");
echo dbmfirstkey($dbm);

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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