I got a very strange problem.
I have a JSON webservice.
When i check it with this website http://www.freeformatter.com/json-formatter.html#ad-output
Everything is OK.
But when i load my JSON with this code :
$data = file_get_contents('http://www.mywebservice');
if(!empty($data))
{
$obj = json_decode($data);
switch (json_last_error()) {
case JSON_ERROR_NONE:
echo ' - JSON_ERROR_NONE';
break;
case JSON_ERROR_DEPTH:
echo ' - JSON_ERROR_DEPTH';
break;
case JSON_ERROR_STATE_MISMATCH:
echo ' - JSON_ERROR_STATE_MISMATCH';
break;
case JSON_ERROR_CTRL_CHAR:
echo ' - JSON_ERROR_CTRL_CHAR';
break;
case JSON_ERROR_SYNTAX:
echo "\r\n\r\n - SYNTAX ERROR \r\n\r\n";
break;
case JSON_ERROR_UTF8:
echo ' - JSON_ERROR_UTF8';
break;
default:
echo ' - Unknown erro';
break;
}
I got the error : SYNTAX ERROR
WHICH IS NOT HELP FULL AT ALL.
It is a nightmare.
I see that with PHP 5.5 i could use this function : http://php.net/manual/en/function.json-last-error-msg.php
(but i did not succeed to install PHP 5.5 yet, and i m not sure this function will give me more detail)
I faced the same issue, actually there are some hidden characters unseen and you need to remove it.
Here’s a global code that works for many cases:
<?php
$checkLogin = file_get_contents("http://yourwebsite.com/JsonData");
// This will remove unwanted characters.
// Check http://www.php.net/chr for details
for ($i = 0; $i <= 31; ++$i) {
$checkLogin = str_replace(chr($i), "", $checkLogin);
}
$checkLogin = str_replace(chr(127), "", $checkLogin);
// This is the most common part
// Some file begins with 'efbbbf' to mark the beginning of the file. (binary level)
// here we detect it and we remove it, basically it's the first 3 characters
if (0 === strpos(bin2hex($checkLogin), 'efbbbf')) {
$checkLogin = substr($checkLogin, 3);
}
$checkLogin = json_decode( $checkLogin );
print_r($checkLogin);
?>
Answer：
Removing the BOM (Byte Order Mark) is often-times the solution you need:
function removeBOM($data) {
if (0 === strpos(bin2hex($data), 'efbbbf')) {
return substr($data, 3);
}
return $data;
}
You shouldn’t have a BOM, but if it’s there, it is invisible so you won’t see it!!
use BOM Cleaner if you have lot’s of files to fix.
Answer：
I solved this issue adding stripslashes to the string, before json_decode.
$data = stripslashes($data);
$obj = json_decode($data);
Answer：
To put all things together here and there, I’ve prepared JSON wrapper with decoding auto corrective actions. Most recent version can be found in my GitHub Gist.
abstract class Json
{
public static function getLastError($asString = FALSE)
{
$lastError = \json_last_error();
if (!$asString) return $lastError;
// Define the errors.
$constants = \get_defined_constants(TRUE);
$errorStrings = array();
foreach ($constants["json"] as $name => $value)
if (!strncmp($name, "JSON_ERROR_", 11))
$errorStrings[$value] = $name;
return isset($errorStrings[$lastError]) ? $errorStrings[$lastError] : FALSE;
}
public static function getLastErrorMessage()
{
return \json_last_error_msg();
}
public static function clean($jsonString)
{
if (!is_string($jsonString) || !$jsonString) return '';
// Remove unsupported characters
// Check http://www.php.net/chr for details
for ($i = 0; $i <= 31; ++$i)
$jsonString = str_replace(chr($i), "", $jsonString);
$jsonString = str_replace(chr(127), "", $jsonString);
// Remove the BOM (Byte Order Mark)
// It's the most common that some file begins with 'efbbbf' to mark the beginning of the file. (binary level)
// Here we detect it and we remove it, basically it's the first 3 characters.
if (0 === strpos(bin2hex($jsonString), 'efbbbf')) $jsonString = substr($jsonString, 3);
return $jsonString;
}
public static function encode($value, $options = 0, $depth = 512)
{
return \json_encode($value, $options, $depth);
}
public static function decode($jsonString, $asArray = TRUE, $depth = 512, $options = JSON_BIGINT_AS_STRING)
{
if (!is_string($jsonString) || !$jsonString) return NULL;
$result = \json_decode($jsonString, $asArray, $depth, $options);
if ($result === NULL)
switch (self::getLastError())
{
case JSON_ERROR_SYNTAX :
// Try to clean json string if syntax error occured
$jsonString = self::clean($jsonString);
$result = \json_decode($jsonString, $asArray, $depth, $options);
break;
default:
// Unsupported error
}
return $result;
}
}
Example usage:
$json_data = file_get_contents("test.json");
$array = Json::decode($json_data, TRUE);
var_dump($array);
echo "Last error (" , Json::getLastError() , "): ", Json::getLastError(TRUE), PHP_EOL;
Answer：
After trying all the solution without the result this is the one worked for me.
Hope it will help someone
$data = str_replace('"', '"', $data);
Answer：
I have the same problem, receiving JSON_ERROR_CTRL_CHAR and JSON_ERROR_SYNTAX.
This is my fix.
$content = json_decode(json_encode($content), true);
Answer：
please first clean json data and then load.
Answer：
You haven’t show your JSON but this sound like it could be an Invalid UTF-8 sequence in argument, most online validator wont catch it.
make sure your data is UTF-8 and also check if you have foreign characters.
You don’t need PHP5 to see your error, use error_log() to log the problems.
Answer：
A JSON string must be double-quoted, the JSON isn’t valid because you don’t need to escape ' character.
char = unescaped /
escape (
%x22 / ; " quotation mark U+0022
%x5C / ; \ reverse solidus U+005C
%x2F / ; / solidus U+002F
%x62 / ; b backspace U+0008
%x66 / ; f form feed U+000C
%x6E / ; n line feed U+000A
%x72 / ; r carriage return U+000D
%x74 / ; t tab U+0009
%x75 4HEXDIG ) ; uXXXX U+XXXX
The ' is not in the list.
See this list of special character used in JSON:
\b Backspace (ascii code 08)
\f Form feed (ascii code 0C)
\n New line
\r Carriage return
\t Tab
\" Double quote
\ Backslash character
Check out this site for more documentation.
Answer：
I had the same issues. I took the following steps:
-
changed the JSON text encoding
$json = utf8_encode($json); -
I then viewed the plain text before decoding. I found crazy symbols like
ï -
then I just stripped it off
$json = str_replace(array('ï',''), '',$json);and I successfully decoded my JSON
Answer：
One problem from my side, is that there were some invalid numbers starting with 0, Ex: “001”, “002”, “003”.
"expectedToBeReturned":1,
"inventoryNumber":001,
"remindNote":"",
Replace 001 with 1 and it works.
Answer：
This code worked for me.
Basically it removes hidden characters.
function cleanString($val)
{
$non_displayables = array(
'/%0[0-8bcef]/', # url encoded 00-08, 11, 12, 14, 15
'/%1[0-9a-f]/', # url encoded 16-31
'/[\x00-\x08]/', # 00-08
'/\x0b/', # 11
'/\x0c/', # 12
'/[\x0e-\x1f]/', # 14-31
'/x7F/' # 127
);
foreach ($non_displayables as $regex)
{
$val = preg_replace($regex,'',$val);
}
$search = array(" function cleanString($val) { $non_displayables = array( '/%0[0-8bcef]/', # url encoded 00-08, 11, 12, 14, 15 '/%1[0-9a-f]/', # url encoded 16-31 '/[\x00-\x08]/', # 00-08 '/\x0b/', # 11 '/\x0c/', # 12 '/[\x0e-\x1f]/', # 14-31 '/x7F/' # 127 ); foreach ($non_displayables as $regex) { $val = preg_replace($regex,'',$val); } $search = array("\0","\r","\x1a","\t"); return trim(str_replace($search,'',$val)); }
","\r","\x1a","\t");
return trim(str_replace($search,'',$val));
}
Answer：
I had same issue. For me it was causing by echo "<br/><pre>". I was trying to pass json string to another php file using exit(json_encode(utf8ize($resp_array))); At the beginning of file i had decleared break line tag… So this was error for me. Removing this break line tag , i was able to decoding my json string an other php file..
Answer：
I had same issue. For me it was causing by echo "<br/><pre>".
I was trying to pass json string to another php file using :
exit(json_encode(utf8ize($resp_array)));
At the beginning of file I had decleared break line tag… So this was error for me. Removing this break line tag , I was able to […]
