如何忽略PHP注意：json_decode（）：在Yii中检测到整数溢出？

Question

I'm trying to decode a long integer in JSON, but it always crashes and gives an error in Yii. I already use the JSON_BIGINT_AS_STRING option. How do I bypass this error or ignore it?

php > var_dump( json_decode('[66933258,"B009GQ034C",281441845828]', false, 512, JSON_BIGINT_AS_STRING));
PHP Notice:  json_decode(): integer overflow detected in php shell code on line 1
array(3) {
  [0]=>
  int(66933258)
  [1]=>
  string(10) "B009GQ034C"
  [2]=>
  string(19) "9223372036854775807"
}

In the app, it gives

PHP Notice – yii\\base\\ErrorException json_decode(): integer overflow detected

Answer 1

Just tried your code and on my machine it works perfectly, perhaps it has something to do with your php version or so?

The only thing I can think of is (if you don't need the values as a number, but just the values) to use preg_replace to "escape" the numbers as strings first:

$json = '[66933258,"B009GQ034C",281441845828]'; 
var_dump(json_decode(preg_replace('/(\W)(\d+)(\W)/', '\\1"\\2"\\3', $json)));

Will yield this:

array (size=3)
  0 => string '66933258' (length=8)
  1 => string 'B009GQ034C' (length=10)
  2 => string '281441845828' (length=12)

Edit:

Now that I'm looking a bit closer: You are actually getting a value on the command line. So the JSON_BIGINT_AS_STRING is working correctly. The problem is that the json_decode() -function seems to generate a notice before it switches to this behavior. Yii's error handler captures notices by default and converts them into an exception.

In this case the solution might be as simple as:

var_dump(@json_decode('[66933258,"B009GQ034C",281441845828]', false, 512, JSON_BIGINT_AS_STRING));

I would normally advise against using the silence operator because it obscures errors, but in this case it beats the alternative (disabling capturing notices and possibly missing other errors)

Answer 2

Surround with try/catch statement to intercept the exception. More points for selecting the proper exception to catch, and preventing false positives from similar exceptions.

Answer 3

You can use json_decode() with depth[512] and option[JSON_BIGINT_AS_STRING] for large integers :

<?php
    $json = '{"number": 12345678901234567890}';

    $jsonArray = json_decode($json, true, 512, JSON_BIGINT_AS_STRING);

    $jsonObject = json_decode($json, false, 512, JSON_BIGINT_AS_STRING);

    print_r($jsonArray);
?>

JSON_BIGINT_AS_STRING that allows casting big integers to string instead of floats which is the default.