note 127427 added to json.constants

Be EXTREMELY cautious when using the code majid4466 at gmail dot com provided, or JSON_NUMERIC_CHECK in general. For example, in php 7.4 and 8.1 with precision: 14 and serialize_precision: -1 we get: <?php $array = ['€', 55.6666666666666666, 'http://example.com/some/cool/page', '000337', '55.6666666666666666']; echo $case1 = json_encode($array); echo $case2 = json_encode($array, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES ); echo $case3 = json_encode($array, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_NUMERIC_CHECK); ["\u20ac",55.666666666666664,"http:\/\/example.com\/some\/cool\/page","000337","55.6666666666666666"] // in $case1, both euro sign and the url change but we also lost a digit in our unquoted float (due to precision) ["€",55.666666666666664,"http://example.com/some/cool/page","000337","55.6666666666666666"] // in $case2, both euro sign and the url stay exactly the same but we still lost a digit in our unquoted float (due to precision) ["€",55.666666666666664,"http://example.com/some/cool/page",337,55.666666666666664] // in $case3, we once again keep euro sign and the url intact but this time not only our unquoted float lost a digit // but the same happened to our quoted float and the number/string lost its leading zeros too Also, note that in php 5.x you will probably get some different but equally wrong results as default values may be different and some functions have changed internally as well. ---- Server IP: 45.112.84.4 Probable Submitter: 45.91.159.163 (proxied: 62.74.59.220) ---- Manual Page -- https://php.net/manual/en/json.constants.php Edit -- https://main.php.net/note/edit/127427 Del: integrated -- https://main.php.net/note/delete/127427/integrated Del: useless -- https://main.php.net/note/delete/127427/useless Del: bad code -- https://main.php.net/note/delete/127427/bad+code Del: spam -- https://main.php.net/note/delete/127427/spam Del: non-english -- https://main.php.net/note/delete/127427/non-english Del: in docs -- https://main.php.net/note/delete/127427/in+docs Del: other reasons-- https://main.php.net/note/delete/127427 Reject -- https://main.php.net/note/reject/127427 Search -- https://main.php.net/manage/user-notes.php