In_Array

 
    <?php
class Person {
    private $name;
    private $age;
    private $id;        function __construct( $name, $age ) {
        $this->name = $name;
        $this->age = $age;
    }    function setId( $id ) {
        $this->id = $id;
    }
 
    function getId(){
        echo "get id method";
    }
 
    function __clone() {
        $this->id = 0;
    }
}
$p = new Person("A",10);$method = "getId";     // define a method nameif ( in_array( $method, get_class_methods( $p ) ) ) {
    print $p->$method();  // invoke the method
}?>

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