dl
Name
dl — Loads an extension.
Synopsis
bool dl
(extension);
string extension: Name of
extension to load
Returns
TRUE on success; FALSE on error
Description
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
Example 991. Load an
extension
<?php
// 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
http://www.opencontent.org/openpub/).
The authors of this book have elected not to choose any options under the OPL. This online book was obtained
from
http://www.fooassociates.com/phpfer/
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
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