phpJsonPrettyPrint

jsonPrettyPrint.php

<?php

function jsonPrettyPrint($request)
{
    $json = $request["response"];
    $result = '';
    $level = 0;
    $in_quotes = false;
    $in_escape = false;
    $ends_line_level = null;
    $json_length = strlen($json);

    for ($i = 0; $i < $json_length; $i++) {
        $char = $json[$i];
        $new_line_level = null;
        $post = "";
        if ($ends_line_level !== null) {
            $new_line_level = $ends_line_level;
            $ends_line_level = null;
        }
        if ($in_escape) {
            $in_escape = false;
        } elseif ($char === '"') {
            $in_quotes = !$in_quotes;
        } elseif (! $in_quotes) {
            switch ($char) {
                case '}': case ']':
                    $level--;
                    $ends_line_level = null;
                    $new_line_level = $level;
                    break;

                case '{': case '[':
                    $level++;
                case ',':
                    $ends_line_level = $level;
                    break;

                case ':':
                    $post = " ";
                    break;

                case " ": case "  ": case "\n": case "\r":
                    $char = "";
                    $ends_line_level = $new_line_level;
                    $new_line_level = null;
                    break;
            }
        } elseif ($char === '\\') {
            $in_escape = true;
        }
        if ($new_line_level !== null) {
            $result .= "\n".str_repeat("  ", $new_line_level);
        }
        $result .= $char.$post;
    }

    return $result;
}