/**
* Internal method to get a JavaScript object notation string from an array.
*
* You can add \\ before a function string that this string will keep as a real JS function.
*
* @param mixed $data The data to convert to JS object.
* @param bool $quoteKey Quote key by double quote or not.
* - TRUE: {"key":"value"}
* - FALSE: {key:"value"}
*
* @return string JavaScript object notation representation of the array
*/
public static function getJSObject($data, $quoteKey = true)
{
if ($data === null) {
return 'null';
}
$output = '';
switch (gettype($data)) {
case 'boolean':
$output .= $data ? 'true' : 'false';
break;
case 'float':
case 'double':
case 'integer':
$output .= $data + 0;
break;
case 'array':
if (!ArrayHelper::isAssociative($data)) {
$child = array();
foreach ($data as $value) {
$child[] = static::getJSObject($value, $quoteKey);
}
$output .= '[' . implode(',', $child) . ']';
break;
}
case 'object':
$array = is_object($data) ? get_object_vars($data) : $data;
$row = array();
foreach ($array as $key => $value) {
$key = json_encode($key);
if (!$quoteKey) {
$key = substr(substr($key, 0, -1), 1);
}
$row[] = $key . ':' . static::getJSObject($value, $quoteKey);
}
$output .= '{' . implode(',', $row) . '}';
break;
default:
// anything else is treated as a string
return strpos($data, '\\') === 0 ? substr($data, 1) : json_encode($data);
break;
}
return $output;
}