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What is the quickest method to verify if a string is JSON using PHP?

asked 2021-12-22 11:00:00 +0000

ladyg gravatar image

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answered 2023-04-01 15:00:00 +0000

bukephalos gravatar image

The quickest method to verify if a string is JSON using PHP is to use the built-in function json_decode(). This function parses a JSON string and returns the decoded data, or null if the JSON is invalid.

Therefore, to verify if a string is JSON, you can simply call json_decode() with the string as argument and check if the result is not equal to null. Here's an example:

function isJson(string $string) : bool {
    json_decode($string);
    return json_last_error() === JSON_ERROR_NONE;
}

This function returns true if the string is valid JSON, or false otherwise.

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Asked: 2021-12-22 11:00:00 +0000

Seen: 18 times

Last updated: Apr 01 '23