Processing json array in PHP sent via jquery - php

Question

I am trying to consume a JSON array in PHP sent via JQuery. The data being sent to the server is in this format:
[{"id":"7","start":"00:00","end":"02:30","date":"2013-11-15"},{"id":"10","start":"23:00","end":"23:30","date":"2013-11-15"},{"id":"5","start":"13:00","end":"14:00","date":"2013-11-16"},{"id":"6","start":"18:00","end":"18:45","date":"2013-11-16"}]
I am sending the above data to the server through this function:
$('#updateOverallChanges').click(function(event){
var formArray = new Array();
$('.updateForm').each(function( index ) {
formArray.push($(this).JSONFromSerialize());
});
$.ajax({
url: 'inner/formTester.php',
data: JSON.stringify(formArray),
type: 'POST',
contentType: "application/json; charset=utf-8",
});
});
The function JSONFromSerialize is responsible for converting the form in meaningful json data:
(function($) {
$.fn.JSONFromSerialize = function() {
var o = {};
var a = this.serializeArray();
$.each(a, function() {
if (o[this.name]) {
if (!o[this.name].push) {
o[this.name] = [ o[this.name] ];
}
o[this.name].push(this.value || '');
} else {
o[this.name] = this.value || '';
}
});
return o;
};
})(jQuery);
I am using the following PHP code to process the JSON array:
<?php
$params = json_decode($_POST[]);
echo $params;
?>
But the above code give the following output:
Fatal error: Cannot use [] for reading in C:\xampp\htdocs\holidaymanager\inner\formTester.php on line 2
Second attempt
Modified the payload to be a name value pair:
var postData = {
data : formArray
};
$.ajax({
url: 'inner/formTester.php',
data: JSON.stringify(postData),
type: 'POST',
contentType: "application/json; charset=utf-8",
});
The post data is:
{"data":[{"id":"7","start":"00:00","end":"02:30","date":"2013-11-15"},{"id":"10","start":"23:00","end":"23:30","date":"2013-11-15"},{"id":"5","start":"13:00","end":"14:00","date":"2013-11-16"},{"id":"6","start":"18:00","end":"18:45","date":"2013-11-16"}]}
The php code still fails:
<?php
$params = json_decode($_POST["data"]);
echo $params;
?>
Error:
Notice: Undefined index: data in C:\xampp\htdocs\holidaymanager\inner\formTester.php on line 2
Please advice how can I consume a JSON array sent over to the backend written in PHP.

Answer 1

$.ajax({
data : {data:JSON.stringify(postData)},
})
in php
$params = $_POST['data']; // add this line
$params = json_decode($params,true);
print_r($params);
or else
$params = json_decode($_POST,true);
print_r($params);
you have pass 2nd argument true with json_Decode()...
hope it may help you