PHP json_encode and javascript functions

No. JSON spec does not support functions. You can write your own code to output it in a JSON-like format and it should work fine though.

If don't want to write your own JSON encoder you can resort to Zend_Json, the JSON encoder for the Zend Framework. It includes the capability to cope with JSON expressions.

json_decode parse the given array to json string, so you can play with it as a string. Just use some unique string to indicate the start and the end of the function. Then use str_replace to remove the quotes.

$function = "#!!function(){}!!#"; 
$message = "Hello";

$json = array(   
  'message' => $message,
  'func' => $function
);
$string = json_encode($json);
$string = str_replace('"#!!','',$string);
$string = str_replace('!!#"','',$string);
echo $string;

The output will be:

{"message":"Hello","func":function(){}}

The following is not exactly what you are looking for but may help :

jQuery.ajax({
    url: url,
    type: "POST",
    dataType: "json",
    data: ({
        method: 'mypage' + target,
        prop: value,

    }),
    beforeSend: function() {

    },
    success: function(data) {

        //To change the value of a property in your json object just do this : 
        // ps : data contain a json object (json_decode() in php for example) 

        data.table.draw_data.formatter = function() {return this.y;}

        my_fct(data); // now 'formatter' contains my function :)

    },
    error: function(jqXHR, textStatus, errorThrown) {
        console.log(JSON.stringify(jqXHR));
        console.log("AJAX error: " + textStatus + ' : ' + errorThrown);
    }
});

Hope it helps :)

You can try this:

var json_string = '{"message":"Hello","myfunc":"function(){ alert(this.message) }"}';
var json_string = JSON.parse(json_string, function(k,v){
    if(typeof v == 'string' && /function\(\)\{/.test(v)){
        return eval(k+' = '+v); 
    }else{
        return v
    }
});

The enconding part in PHP is seems to be solved by now. You can use

json_encode($p, JSON_UNESCAPED_UNICODE)

this way your function will not be escaped. However

This function can also help:

function jsonify($var){
return str_ireplace(array("'function",'"function',"}'",'}"'),array("function",'function',"}",'}'),json_encode($var));
}

Taken from here: http://network.convergenceservices.in/forum/105-uknowva-development/4710-introducing-convhelperjsonify-in-uknowva-251.html#4710