function json_encode_utf_normal($value)
{
if (is_int($value)) {
return (string) $value;
} elseif (is_string($value)) {
$value = str_replace(array('\\', '/', '"', "\r", "\n", "\\b", "\f", "\t"), array('\\\\', '\\/', '\\"', '\\r', '\\n', '\\b', '\\f', '\\t'), $value);
$convmap = array(0x80, 0xffff, 0, 0xffff);
$result = "";
for ($i = strlen($value) - 1; $i >= 0; $i--) {
$mb_char = substr($value, $i, 1);
$result = $mb_char . $result;
}
return '"' . $result . '"';
} elseif (is_float($value)) {
return str_replace(",", ".", $value);
} elseif (is_null($value)) {
return 'null';
} elseif (is_bool($value)) {
return $value ? 'true' : 'false';
} elseif (is_array($value)) {
$with_keys = false;
$n = count($value);
for ($i = 0, reset($value); $i < $n; $i++, next($value)) {
if (key($value) !== $i) {
$with_keys = true;
break;
}
}
} elseif (is_object($value)) {
$with_keys = true;
} else {
return '';
}
$result = array();
if ($with_keys) {
foreach ($value as $key => $v) {
$result[] = json_encode_utf_normal((string) $key) . ':' . json_encode_utf_normal($v);
}
return '{' . implode(',', $result) . '}';
} else {
foreach ($value as $key => $v) {
$result[] = json_encode_utf_normal($v);
}
return '[' . implode(',', $result) . ']';
}
}
public static function jsonEncode($arr)
{
return is_array($arr) || is_object($arr) ? json_encode_utf_normal($arr) : json_encode_utf_normal(array());
}
