utf 8 - php mb_convert_variables RECURSION error

Hmm, I haven't encountered the exact "RECURSION" error with mb_convert_variables function, but I did face a similar issue with another function in PHP. In my case, the recursion error occurred due to an infinite loop caused by a circular reference within the input data.

To troubleshoot this issue, I suggest checking if your input data contains any circular references. Circular references can occur if you have nested arrays or objects that reference each other in a loop-like manner.

One way to identify circular references is by using the PHP built-in function `json_encode` with the `JSON_THROW_ON_ERROR` flag. Try encoding your input data like this:

php
$input = "Hello World";

try {

    $json = json_encode($input, JSON_THROW_ON_ERROR);

} catch (JsonException $e) {

    echo $e->getMessage();

}

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I have encountered a similar issue with the mb_convert_variables function in the past. In my case, the recursion error was caused due to an infinite loop in the script. This can happen if the input variable being passed to the function is already in UTF-8 encoding.

To fix the error, you can add a simple check to ensure that the input variable is not already in UTF-8. Here's an updated version of your code:

php
$input = "Hello World";



// Check the current encoding of the input variable

$currentEncoding = mb_detect_encoding($input, 'UTF-8', true);



// Only convert if the input variable is not already in UTF-8

if ($currentEncoding !== 'UTF-8') {

    $output = mb_convert_variables('UTF-8', $currentEncoding, $input);

} else {

    $output = $input;

}



echo $output;

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