Get Class Constructor’s Parameter Information

 
    <?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() {
        $this->id = 0;
    }
}class PersonHelper{
    function __construct( &$Person ) {
    }
}$prod_class = new ReflectionClass( PersonHelper );
$method = $prod_class->getMethod( "__construct" );
$params = $method->getParameters();foreach ( $params as $param ) {
  print argData( $param );
}function argData( ReflectionParameter $arg ) {
  $details = "";
  $name  = $arg->getName();
  $class = $arg->getClass();  if ( ! empty( $class )  ) {
    $classname = $class->getName();
    $details .= "\$$name must be a $classname object\n";
  }
  if ( $arg->allowsNull() ) {
    $details .= "\$$name can be null\n";
  }
  if ( $arg->isPassedByReference() ) {
    $details .= "\$$name is passed by reference\n";
  }
  return $details;
}?>

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