<?php

/**

* Formats a JSON object for readability.

*

* @param mixed $data The data to format.

* @param int $indent The indentation level.

* @return string The formatted JSON string.

*/

function formatJson( $data, $indent = 0 ) {

$output = '';

if ( is_array( $data ) ) {

$output .= '{\n';

$indentation = str_repeat( ' ', $indent ); // Calculate indentation

foreach ( $data as $key => $value ) {

$output .= $indentation . '"' . json_encode( $key ) . ': ';

$output .= formatJson( $value, $indent + 1 ); // Recursive call

}

$output .= $indentation . ',\n';

$output .= $indentation . '}';

} elseif ( is_object( $data ) ) {

$output .= '{\n';

$indentation = str_repeat( ' ', $indent );

$keys = array_keys((array)$data); //Get keys from object

foreach ($keys as $key) {

$output .= $indentation . '"' . json_encode($key) . ': ';

$output .= formatJson((array)$data->$key, $indent + 1);

}

$output .= $indentation . ',\n';

$output .= $indentation . '}';

} else {

$output .= '"' . json_encode( $data ) . '"\n'; // Simple value

}

return $output;

}

//Example usage:

if(isset($argv)){

$json_string = $argv[1]; // Get JSON string from command line argument

$formatted_json = formatJson(json_decode($json_string, true), 0); //Decode and format

echo $formatted_json;

}

?>