Example of php dl function usage

This article mainly introduces the usage of dl functions in php, and describes how to use dl functions to break through restrictions in PHP settings in the form of examples. it is a very practical technique, for more information about the dl function usage in php, see the following example. Share it with you for your reference. The details are as follows:

PHP dl functions are described as follows:
Http://www.php.net/manual/en/function.dl.php

The usage example is as follows:

The code is as follows:

<? Php
// Example loading an extension based on OS
If (! Extension_loaded ('sqlite ')){
If (strtoupper (substr (PHP_ OS, 0, 3) === 'win '){
Dl ('php _ sqlite. dll ');
} Else {
Dl ('sqlite. so ');
}
}
// Or, the PHP_SHLIB_SUFFIX constant is available as of PHP 4.3.0
If (! Extension_loaded ('sqlite ')){
$ Prefix = (PHP_SHLIB_SUFFIX = 'dll ')? 'Php _':'';
Dl ($ prefix. 'sqlite. '. PHP_SHLIB_SUFFIX );
}
?>
Dl ("memcache. so ");

In this way, as long as the php. ini file is configured, you can stop referencing the so File. otherwise, multiple references will be said.

The code is as follows:

Extension_dir = "/usr/local/php/lib/php/extensions/no-debug-non-zts-20060613 /"
; Extension = memcache. so

I hope this article will help you with PHP programming.