extension_loaded

Find out whether an extension is loaded

Syntax

extension_loaded(string $extension): bool

Parameters

extension

The extension name. This parameter is case-insensitive.

You can see the names of various extensions by using phpinfo() or if you're using the CGI or CLI version of PHP you can use the -m switch to list all available extensions:

$ php -m
[PHP Modules]
xml
tokenizer
standard
sockets
session
posix
pcre
overload
mysql
mbstring
ctype

[Zend Modules]

Return

Returns true if the extension identified by extension is loaded, false otherwise.

Examples

<?

if(!extension_loaded('gd'))
{
    if(!dl('gd.so'))
    {
        exit;
    }
}

?>

			
		

assert

assert_options

cli_get_process_title

cli_set_process_title

dl

gc_collect_cycles

gc_disable

gc_enable

gc_enabled

gc_mem_caches

gc_status

get_cfg_var

get_current_user

get_defined_constants

get_extension_funcs

get_include_path

get_included_files

get_loaded_extensions

get_required_files

get_resources

getenv

getlastmod

getmygid

getmyinode

getmypid

getmyuid

getopt

getrusage

ini_alter

ini_get

ini_get_all

ini_restore

ini_set

memory_get_peak_usage

memory_get_usage

memory_reset_peak_usage

php_ini_loaded_file

php_ini_scanned_files

php_sapi_name

php_uname

phpcredits

phpinfo

phpversion

putenv

set_include_path

set_time_limit

sys_get_temp_dir

version_compare

zend_thread_id

zend_version

PHP

Home Menu