PHP global class instance introduction

This article mainly shares with you an introduction to php global class examples, hoping to help everyone.

Just like the hello class below

<?phpclass hello{
    function say()
    {
        echo "hello world !";
    }
}

It is also very easy to call the global class. Like this, it can be easily called

<?phprequire_once(&#39;test1.php&#39;);
require_once(&#39;test2.php&#39;);
require_once(&#39;hello.php&#39;);
use space\test1\test;use space\test2\test as test2;$test1 = new test();$test2 = new test2();
$hello = new \hello();$test1->say();
$test2->say();
$hello->say();

In the new keyword before instantiating the class in the class Add \ before the name to instantiate the global class

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