Define the class BBB and save it as BBB.php. The content is as follows:
<?php
class BBB{
private $name;
function __construct($name){
$this->name = $name;
}
function hello() {
echo $this->name;
}
}
?>Write a php file for testing and save it as AAA.php. The content is as follows:
<?php
require_once 'BBB.php';
if(class_exists('BBB')){
$bbb = new BBB('张三');
$bbb->hello();
echo "<br>";
$class = BBB;
$bbb = new $class('李四');
$bbb->hello();
echo "<br>";
$class = 'BBB';
$bbb = new $class('王五');
$bbb->hello();
}
?>Access AAA.php through the browser and the output result is as follows:
Zhang San
Li Si
Wang Wu
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