/**
* Converts an associative array of arbitrary depth and dimension into JSON representation. Used for compatibility with older PHP builds.
*
* @param $array The array to convert.
* @return mixed The resulting JSON string, or false if the argument was not an array.
* @author Andy Rusterholz
* @link http://php.net/json_encode (see comments)
*/
function yourls_array_to_json($array)
{
if (!is_array($array)) {
return false;
}
$associative = count(array_diff(array_keys($array), array_keys(array_keys($array))));
if ($associative) {
$construct = array();
foreach ($array as $key => $value) {
// We first copy each key/value pair into a staging array,
// formatting each key and value properly as we go.
// Format the key:
if (is_numeric($key)) {
$key = "key_{$key}";
}
$key = '"' . addslashes($key) . '"';
// Format the value:
if (is_array($value)) {
$value = yourls_array_to_json($value);
} else {
if (!is_numeric($value) || is_string($value)) {
$value = '"' . addslashes($value) . '"';
}
}
// Add to staging array:
$construct[] = "{$key}: {$value}";
}
// Then we collapse the staging array into the JSON form:
$result = "{ " . implode(", ", $construct) . " }";
} else {
// If the array is a vector (not associative):
$construct = array();
foreach ($array as $value) {
// Format the value:
if (is_array($value)) {
$value = yourls_array_to_json($value);
} else {
if (!is_numeric($value) || is_string($value)) {
$value = '"' . addslashes($value) . '"';
}
}
// Add to staging array:
$construct[] = $value;
}
// Then we collapse the staging array into the JSON form:
$result = "[ " . implode(", ", $construct) . " ]";
}
return $result;
}
function yourls_json_encode($array)
{
if (function_exists('json_encode')) {
return json_encode($array);
} else {
require_once dirname(__FILE__) . '/functions-json.php';
return yourls_array_to_json($array);
}
}