原文php
http://www.bin-co.com/php/scripts/array2json/html
函數以下:正則表達式
function arrayToJson($arr) {數據庫
if(function_exists('json_encode')) return json_encode($arr); //Lastest versions of PHP already has this functionality.json
$parts = array();安全
$is_list = false;oracle
//Find out if the given array is a numerical array函數
$keys = array_keys($arr);post
$max_length = count($arr)-1;this
if(($keys[0] == 0) and ($keys[$max_length] == $max_length)) {//See if the first key is 0 and last key is length - 1
$is_list = true;
for($i=0; $i
if($i != $keys[$i]) { //A key fails at position check.
$is_list = false; //It is an associative array.
break;
}
}
}
foreach($arr as $key=>$value) {
if(is_array($value)) { //Custom handling for arrays
if($is_list) $parts[] = array2json($value); /* :RECURSION: */
else $parts[] = '"' . $key . '":' . array2json($value); /* :RECURSION: */
} else {
$str = '';
if(!$is_list) $str = '"' . $key . '":';
//Custom handling for multiple data types
if(is_numeric($value)) $str .= $value; //Numbers
elseif($value === false) $str .= 'false'; //The booleans
elseif($value === true) $str .= 'true';
else $str .= '"' . addslashes($value) . '"'; //All other things
// :TODO: Is there any more datatype we should be in the lookout for? (Object?)
$parts[] = $str;
}
}
$json = implode(',',$parts);
if($is_list) return '[' . $json . ']';//Return numerical JSON
return '{' . $json . '}';//Return associative JSON
}
使用方法:
$dataArr = array(
'aaa' => array(
1,2,3
),
'bbb' => array(
'b_1' => "222",
'b_2' => "555",
'b_3' => array(
'a' => 1,
'b' => 2,
'c' => 3
)
)
);
echo arrayToJson($dataArr);