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



dl — Loads an extension.


bool dl(extension);
string extension: Name of extension to load


TRUE on success; FALSE on error


Attempts to load an extension into PHP. Extensions provide an alternative to compiling directly into PHP, as individual extensions can be loaded via the PHP initialization file or via the dl() function. Note that including the function in every script incurs a performance penalty. You can also use extension_loaded() to check whether the extension is already loaded before using dl() . This function is not supported on multi-threaded web servers, in particular running PHP as an ISAPI extension under Windows IIS.


Example 991. Load an extension

// load the GD module
if (extension_loaded("gd")) {
   echo "Extension found";
} else {
   echo "Extension not found. Attempting load";
   dl("php_gd.dll") || die("Extension failed to load");

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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