PHP json_encode prettify compact mode with indentation level options

JsonEncoder.php

<?php

declare(strict_types=1);

namespace App\Support;

class JsonEncoder
{
    private const JSON_PRETTY_PRINT_INDENT = 4;

    public function decode($json, int $flags = JSON_THROW_ON_ERROR, int $depth = 512): array
    {
        return json_decode((string)$json, true, $depth, $flags);
    }

    public function encode(
        $value,
        int $flags = JSON_THROW_ON_ERROR,
        int $depth = 512,
        int $indentationDepth = 10,
        string $indentationReplacement = ' '
    ): string {
        $prettify = ($flags & JSON_PRETTY_PRINT) === JSON_PRETTY_PRINT;
        $json = json_encode($value, $flags, $depth);

        if (!$prettify || ($indentationDepth === 0)) {
            return $json;
        }

        $indentedSpace = self::JSON_PRETTY_PRINT_INDENT * ($indentationDepth + 1);
        $leadingIndentedSpace = self::JSON_PRETTY_PRINT_INDENT * $indentationDepth;

        $json = preg_replace("/\\n^\\s{{$indentedSpace},}/m", $indentationReplacement, $json);
        $json = preg_replace("/\\n^\\s{{$leadingIndentedSpace},}([]}])(,?)\$/m", '$1$2', $json);
        
        return $json;
    }
}

PHP's JSON prettifier produces a lot of lines and indentation space on big JSON strings with many nested levels.
This encoder, gives you the option to remove the new lines and indentation from the indentation level you specify and higher.

This class also throws errors by default and has a consistent argument call order. It also assumes that decoding will be always associative (which I think we all use most of the time anyway).

Regex example: https://regex101.com/r/RW3ihP/1