function drupal_to_js
6.x common.inc | drupal_to_js($var) |
Converts a PHP variable into its Javascript equivalent.
We use HTML-safe strings, i.e. with <, > and & escaped.
4 calls to drupal_to_js()
- drupal_get_js in drupal-6.x/
includes/ common.inc - Returns a themed presentation of all JavaScript code for the current page.
- drupal_json in drupal-6.x/
includes/ common.inc - Return data in JSON format.
- upload_js in drupal-6.x/
modules/ upload/ upload.module - Menu-callback for JavaScript-based uploads.
- _locale_rebuild_js in drupal-6.x/
includes/ locale.inc - (Re-)Creates the JavaScript translation file for a language.
File
- drupal-6.x/
includes/ common.inc, line 2544 - Common functions that many Drupal modules will need to reference.
Code
function drupal_to_js($var) {
switch (gettype($var)) {
case 'boolean':
return $var ? 'true' : 'false'; // Lowercase necessary!
case 'integer':
case 'double':
return $var;
case 'resource':
case 'string':
return '"' . str_replace(array("\r", "\n", "<", ">", "&"),
array('\r', '\n', '\x3c', '\x3e', '\x26'),
addslashes($var)) . '"';
case 'array':
// Arrays in JSON can't be associative. If the array is empty or if it
// has sequential whole number keys starting with 0, it's not associative
// so we can go ahead and convert it as an array.
if (empty($var) || array_keys($var) === range(0, sizeof($var) - 1)) {
$output = array();
foreach ($var as $v) {
$output[] = drupal_to_js($v);
}
return '[ ' . implode(', ', $output) . ' ]';
}
// Otherwise, fall through to convert the array as an object.
case 'object':
$output = array();
foreach ($var as $k => $v) {
$output[] = drupal_to_js(strval($k)) . ': ' . drupal_to_js($v);
}
return '{ ' . implode(', ', $output) . ' }';
default:
return 'null';
}
}