Use of the json_validate function

The function introduced in PHP 8.3 provides a more efficient way to check if a given string is valid JSON compared to the previous approach of using json_decode and checking for errors. The new function json_validate  uses the same underlying JSON parser as PHP, which consumes less memory and processing power by only analyzing the string without constructing any decoded value.

json_validate that returns true or false whether the given string is a valid JSON string.  

Example:

<?php
json_validate('[1, 2, 3]'); // true
json_validate('{1, 2, 3]'); // false

<?php

if (json_validate($jsonString) === false) {
    throw new \JsonException(
        json_last_error_msg(), 
        json_last_error()
    );
}

json_validate function synopsis:

json_validate is declared in the global namespace. And validation errors can be retrieved with the existing json_last_error and json_last_error_msg functions.

<?php

/**  
 * Validates a given string to be valid JSON.
 * 
 * @param string $json String to validate  
 * @param int $depth Set the maximum depth. Must be greater than zero.  
 * @param int $flags Bitmask of flags.  
 * @return bool True if $json contains a valid JSON string, false otherwise.  
 */  
function json_validate(string $json, int $depth = 512, int $flags = 0): bool {  
}