Question

Possible Duplicate:
Pass a PHP string to a Javascript variable (and escape newlines)

I have several constants in a PHP application I’m developing. I’ve defined a Constants class and the defined the constants as const VAR_NAME = value; in this class. I would like to share these constants between my JavaScript and PHP code. Is there a DRY (Don’t Repeat Yourself) mechanism to share them?

class Constants {     const RESOURCE_TYPE_REGSITER = 2;     const RESOURCE_TYPE_INFO = 1; } 

Answer 1

I would use json_encode. You will have to convert the class to an associative array first.

$constants = array('RESOURCE_TYPE_REGISTER'=>2, 'RESOURCE_TYPE_INFO'=>2); echo json_encode($constants); 

You could also use reflection to convert the class to an associative array if you would prefer to use a class.

function get_class_consts($class_name) {     $c = new ReflectionClass($class_name);     return ($c->getConstants()); }  class Constants {     const RESOURCE_TYPE_REGSITER = 2;     const RESOURCE_TYPE_INFO = 1; }  echo json_encode(get_class_consts('Constants'));