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jeff.sado..

Getting Started with JSON's and php

in Getting Started • 9 years ago

I had been using xml for a while now. At the beginning of the week I had an idea to send data as a string in a format like a javascript object. I didn't know it was called a JSON. The next day I was reading through lxer (a linux news site) and came across an article on using php with XML or JSON. Since I didn't know what a JSON was I looked it up. Wow just what I wanted to use. It only talked about using it from a file where as I wanted to use it more like ajax. I was looking around for documentation on this and found a bunch of misinforming articles. I put together some tests and I think I have a good working example.

<?php if(count($_REQUEST)==0){?><!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-type" content="text/html;charset=UTF-8">
<title>JSON TEST</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
<script>
$(function()
{var arr=new Array('one','two','three');
data={'arr':arr}
$.ajax(
{
dataType:'json',/* Expected return type (seen bad documentation out there saying to set this as POST)*/
type:'post',/* How it is sent POST or GET */
data:'json='+JSON.stringify(data),/* Because php expects POST or GET data to be in a form like this name=value */
success:parse
});
});
function iterate(arr)
{var html='';
$(arr).each(function(i,val)
{html+=','+val;
});
return html;
}
function iterate_2(arr)
{var html='';
$.each(arr,function(i,val)
{html+=','+val;
});
return html;
}
function iterate_for(arr)
{var html='';
for(var i=0;i<arr.length;i++)
{html+=','+arr[i];
}
return html;
}
/*Wow I can use a returned json object without parsing so cool? */
function parse(json)
{var html='';
html+=iterate_for(json['arr']);
html+=iterate(json.arr);
html+=iterate_2(json['more']['arr']);
$('body').html($('body').html()+html)
}
</script>
</head>
<body>
JSON TEST
</body>
</html>
<?php exit();}
$test=array();
$test['arr']=array('one','two','three');
/*Parse a json object making it into a php object*/
$json=json_decode($_REQUEST['json']);
$json->more=$test;
/*Return a JSON object*/
header('Content-Type: text/javascript; charset=utf-8');
echo json_encode($json,JSON_PRETTY_PRINT);
?>