Simple implementation of php and ajax

Step 1. Create a new folder: js and put the latest jquery.js in it.

Step 2. Create a new file mygetjson.php, the content of which is


class custom_json {

        /** 
     * Convert array to javascript object/array 
     * @param array $array the array 
     * @return string 
    */                                                                    determine type
                                                                                                                                                                                                             ​); isset($array[$i]); ++$i) {
                                                                     $ OUTPUT. = Self :: _ Val ($ array [$ i]);
if ($ i! == $ last) $ OUTPUT. = ','; else {

                                             ’ each($array as $key => $value) {
                  $output .= '"'.$key.'":';                                                                                                                                                                                                           $output .=                                                 ($value);
                                                                                                                                                                                            return $output;

}

/** 
     * [INTERNAL] Format value 
     * @param mixed $val the value 
     * @return string 
    */
private static function _val($val)
{
if(is_string($val)) return '"'.rawurlencode($val).'" ';
          elseif(is_int($val)) return sprintf('%d', $val);
                                          using using using using using using       out out out out out out out out of ‐     ‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐ ‐ val)) return ($val ? 'true' : 'false');
                                                                        ‐‐'''' return 'null'';
$big_test = array(
  array(
        'name' => array('John', 'Smith'),
                                                              using using   using using         ‐                                                                       > 180.53,
‘is_human’ => true,
'string' => 'Hello',
),
array(
' 'name' => array('Green', 'Alien'),
'age' => 642,
'sex' => null,
                                                                                                                                use           use using ’ s ’ s ’ s ​ ’ ​ to ​ to come ‐ to ​​
//echo custom_json:: encode($big_test);//This is used to test whether it returns json data
echo $_GET['jsoncallback'].'('.custom_json::encode($big_test).')';//Use a The callback returns
?>



Step 3. Create a new test page test.html with the content




< meta charset ="utf-8">

                                                                               /javascript">
$(function(){
$('#btn').click(function(){



$.getJSON('json.php?jsoncallback=?',myfunction);
function myfunction(data)
{
var infoHtml = '';
$.each(data,function(contact,contactinfo)
{
// alert(contactinfo.name);

infoHtml+='

name:' +controlinfo.name+'& lt;/p & gt;';
$ ('#info'). html (infohtml);
}
}}}); & lt ;/head>