php function extension_loaded () Usage example, extensionloaded_php tutorial

php function extension_loaded () Usage example, extensionloaded

This example describes the PHP function extension_loaded () usage. Share to everyone for your reference. The specific analysis is as follows:

extension_loaded-Check if an extension is already loaded

For example:
Copy the Code code as follows: <?php
if (!extension_loaded (' GD ')) {
if (!DL (' gd.so ')) {
Exit
}
}
?>
The code above determines whether the GD library extension is loaded.

Add:

To see how PHP has opened the extension:

Command-line CMD interface:

Input: Php-m
The results appear as follows:
Copy the Code code as follows: [PHP Modules]
Bcmath
bz2
Calendar
Com_dotnet
CType
Curl
Date
Dom
Filter
Ftp
Gd
Hash
Iconv
Json
Libxml
Mbstring
MCrypt
Mysql
Mysqli
Odbc
Pcre
Pdo
Pdo_mysql
Pdo_odbc
Pdo_sqlite
Reflection
Session
SimpleXML
Sockets
Spl
Sqlite
Standard
Tokenizer
Wddx
Xml
XmlReader
XmlWriter
Zend Optimizer
Zip

[Zend Modules]

I hope this article is helpful to everyone's PHP programming.

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