Detailed explanation of the use of extension_loaded() function in php

I believe many friends are confused when they see the title. They don’t know much about the usage of php functionextension_loaded(). Today we will introduce to you an example and analyze the function. The specific usage of extension_loaded() to check whether an extension has been loaded, and a supplementary explanation of the method of checking whether the php extension has been loaded on the local machine!

Recommended Manual: php Complete Self-Study Manual

##extension_loaded — Check whether an extension has been loaded

For example:

The code is as follows:

<?php
if (!extension_loaded(&#39;gd&#39;)) {
    if (!dl(&#39;gd.so&#39;)) {
        exit;
    }
}
?>

The above code determines whether to load the gd library extension.

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Supplement:

How to check if php has enabled extensions:

Command line cmd interface:

Input: php -m

Display results As follows:

The code is 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]

Summary:

This article introduces the php function extension_loaded() in detail through examples Usage, I believe everyone has a certain understanding of this, I hope it will be helpful to your work!

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