Convert anything to string (PHP)

index.php

<?php
/**
 * @param mixed $value Value of any PHP type.
 * @return string Value as readable string.
 */
function toString($value, $compactArray = true): string
{
    $data_type = '';

    if (is_array($value)) {
        if ($compactArray) {
            $value = json_encode($value);
        } else {
            $value = print_r($value, true);
        }
    } elseif (is_object($value)) {
        $data_type .= get_class($value);
        if ($value instanceof \Exception) {
            $data_type .= ': Exception';
            $value = print_r([
                'message'   => $value->getMessage(),
                'code'      => $value->getCode(),
                'file'      => $value->getFile(),
                'line'      => $value->getLine(),
                'trace'     => $value->getTraceAsString()
            ], true);
        } else {
            $value = print_r($value, true);
        }
    } elseif (is_resource($value)) {
        $data_type .= get_resource_type($value);
        $value = (string) $value;
    } elseif (is_bool($value)) {
        $value = $value ? 'true' : 'false';
    } elseif ($value === null) {
        $value = 'NULL';
    } elseif (!settype($value, 'string')) {
        $value = 'Error: can\'t convert input data to string';
    }

    if (!empty($data_type)) {
        $value = '[' . $data_type . '] ' . $value;
    }

    return $value;
}