<?php
function jsonEncode($var) {
if (function_exists('json_encode')) {
return json_encode($var);
} else {
switch (gettype($var)) {
case 'boolean':
return $var ? 'true' : 'false'; // Lowercase necessary!
case 'integer':
case 'double':
return $var;
case 'resource':
case 'string':
return '"'. str_replace(array("\r", "\n", "<", ">", "&"),
array('\r', '\n', '\x3c', '\x3e', '\x26'),
addslashes($var)) .'"';
case 'array':
// Arrays in JSON can't be associative. If the array is empty or if it
// has sequential whole number keys starting with 0, it's not associative
// so we can go ahead and convert it as an array.
if (empty ($var) || array_keys($var) === range(0, sizeof($var) - 1)) {
$output = array();
foreach ($var as $v) {
$output[] = jsonEncode($v);
}
return '[ '. implode(', ', $output) .' ]';
}
// Otherwise, fall through to convert the array as an object.
case 'object':
$output = array();
foreach ($var as $k => $v) {
$output[] = jsonEncode(strval($k)) .': '. jsonEncode($v);
}
return '{ '. implode(', ', $output) .' }';
default:
return 'null';
}
}
}
$arr=array('name'=>'CSDN论坛','degree'=>'numberone');
echo jsonEncode($arr);
?>
