private static function dumpInternal($var, $level)
{
switch (gettype($var)) {
case 'boolean':
self::$_output .= $var ? 'true' : 'false';
break;
case 'integer':
self::$_output .= "{$var}";
break;
case 'double':
self::$_output .= "{$var}";
break;
case 'string':
self::$_output .= "'" . addslashes($var) . "'";
break;
case 'resource':
self::$_output .= '{resource}';
break;
case 'NULL':
self::$_output .= 'null';
break;
case 'unknown type':
self::$_output .= '{unknown}';
break;
case 'array':
if (self::$_depth <= $level) {
self::$_output .= '[...]';
} elseif (empty($var)) {
self::$_output .= '[]';
} else {
$keys = array_keys($var);
$spaces = str_repeat(' ', $level * 4);
self::$_output .= '[';
foreach ($keys as $key) {
self::$_output .= "\n" . $spaces . ' ';
self::dumpInternal($key, 0);
self::$_output .= ' => ';
self::dumpInternal($var[$key], $level + 1);
}
self::$_output .= "\n" . $spaces . ']';
}
break;
case 'object':
if (($id = array_search($var, self::$_objects, true)) !== false) {
self::$_output .= get_class($var) . '#' . ($id + 1) . '(...)';
} elseif (self::$_depth <= $level) {
self::$_output .= get_class($var) . '(...)';
} else {
$id = array_push(self::$_objects, $var);
$className = get_class($var);
$spaces = str_repeat(' ', $level * 4);
self::$_output .= "{$className}#{$id}\n" . $spaces . '(';
if ('__PHP_Incomplete_Class' !== get_class($var) && method_exists($var, '__debugInfo')) {
$dumpValues = $var->__debugInfo();
if (!is_array($dumpValues)) {
throw new InvalidValueException('__debuginfo() must return an array');
}
} else {
$dumpValues = (array) $var;
}
foreach ($dumpValues as $key => $value) {
$keyDisplay = strtr(trim($key), "", ':');
self::$_output .= "\n" . $spaces . " [{$keyDisplay}] => ";
self::dumpInternal($value, $level + 1);
}
self::$_output .= "\n" . $spaces . ')';
}
break;
}
}