How to find the Extensions used in PHP Project? - php

Question

When publish PHP project to server,maybe this server not support some extensions but my project required, so I want to find all extionsions my project used.
Like...
"require": {
"php": ">=5.3.0",
"ext-gd": "*"
}
is there some Tools or Commands support?
###For Example
//filename is exp.php
class exp{
private $array = ['a'=>'b'];
private $conn = mysql_connect("....");
}
//tool or command result
require >=PHP5.4,ext-mysql,
//filename is exp.php
namespace com\core\exp
class exp{
private $array = array('a'=>'b');
private $conn = new mysqli("....");
}
//tool or command result
require >=PHP5.3,ext-mysqli

Answer 1

The most common way to load a PHP extension is to include it in your php.ini configuration file. Please note that many extensions are already present in your php.ini and that you only need to remove the semicolon to activate them.
;extension=php_extname.dll
change like this
extension=php_extname.dll
However, some web servers are confusing because they do not use the php.ini located alongside your PHP executable. To find out where your actual php.ini resides, look for its path in phpinfo():
Configuration File (php.ini) Path C:\WINDOWS
Loaded Configuration File C:\Program Files\PHP\5.2\php.ini
After activating an extension, save php.ini, restart the web server and check phpinfo() again. The new extension should now have its own section.
for example:
<?php
phpinfo();
?>

Answer 2

php -m : will give all the modules list
php -i : will give more detailed information about current configuration.