Php json last error
From w3cyberlearnings
Contents |
PHP function json_last_error
This function returns last error for JSON encoding or decoding.
Syntax json_last_error
json_last_error();
JSON error codes
- JSON_ERROR_NONE - No error has occurred
- JSON_ERROR_DEPTH - The maximum stack depth has been exceeded
- JSON_ERROR_STATE_MISMATCH - Invalid or malformed JSON
- JSON_ERROR_CTRL_CHAR - Control character error, possibly incorrectly encoded
- JSON_ERROR_SYNTAX - Syntax error
- JSON_ERROR_UTF8 - Malformed UTF-8 characters, possibly incorrectly encode (available: PHP 5.3.3)
Example 1
<?php
// A valid json string
$json[] = '{"w3cyberlearning": "Learn PHP and JSON"}';
// An invalid json string which will cause an syntax
// error, in this case we used ' instead of " for quotation
$json[] = "{`w3cybrelearnings': 'Learning'}";
foreach ($json as $string) {
echo 'Decoding: ' . $string;
json_decode($string);
switch (json_last_error()) {
case JSON_ERROR_NONE:
echo ' - No errors';
break;
case JSON_ERROR_DEPTH:
echo ' - Maximum stack depth exceeded';
break;
case JSON_ERROR_STATE_MISMATCH:
echo ' - Underflow or the modes mismatch';
break;
case JSON_ERROR_CTRL_CHAR:
echo ' - Unexpected control character found';
break;
case JSON_ERROR_SYNTAX:
echo ' - Syntax error, malformed JSON';
break;
case JSON_ERROR_UTF8:
echo ' - Malformed UTF-8 characters, possibly incorrectly encoded';
break;
default:
echo ' - Unknown error';
break;
}
echo PHP_EOL;
}
?>
Output
Decoding: {"w3cyberlearning": "Learn PHP and JSON"} - No errors
Decoding: {`w3cybrelearnings': 'Learning'} - Syntax error, malformed JSON
Related Links
---json_encode--- json_decode--- json_last_error---
