- var_dump: documentation ( source)
- json_decode: documentation ( source)
- json_last_error: documentation ( source)
- json_encode: documentation ( source)
<?php
/**
* Checks whether a string is valid json.
*
* @param string $string
* @return boolean
*/
function json_is($string)
{
try
{
// try to decode string
json_decode($string);
}
catch (ErrorException $e)
{
// exception has been caught which means argument wasn't a string and thus is definitely no json.
return FALSE;
}
// check if error occured
return (json_last_error() == JSON_ERROR_NONE);
}
// Make sure the string is not empty and is, in fact, a string. An empty string is not valid JSON.
function isJson($string, $assoc = false) {
json_decode($string, $assoc);
if(!empty($string) && is_string($string)) {
json_decode($string, $assoc);
return (json_last_error() == JSON_ERROR_NONE);
// return json_decode($str) != null;
}
return false;
}
$a=['arraiii'=>['dentro'=>234]];
$b=json_encode($a);
$c='';
json_decode('');
var_dump(isJson($c));