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<?php
if (!function_exists('json_encode')) {
function json_encode($data) {
switch (gettype($data)) {
case 'boolean':
return $data ? 'true' : 'false';
case 'integer':
case 'double':
return $data;
case 'resource':
case 'string':
# Escape non-printable or Non-ASCII characters.
# I also put the \\ character first, as suggested in comments on the 'addclashes' page.
$json = '';
$string = '"' . addcslashes($data, "\\\"\n\r\t/" . chr(8) . chr(12)) . '"';
# Convert UTF-8 to Hexadecimal Codepoints.
for ($i = 0; $i < strlen($string); $i++) {
$char = $string[$i];
$c1 = ord($char);
# Single byte;
if ($c1 < 128) {
$json .= ($c1 > 31) ? $char : sprintf("\\u%04x", $c1);
continue;
}
# Double byte
$c2 = ord($string[++$i]);
if (($c1 & 32) === 0) {
$json .= sprintf("\\u%04x", ($c1 - 192) * 64 + $c2 - 128);
continue;
}
# Triple
$c3 = ord($string[++$i]);
if (($c1 & 16) === 0) {
$json .= sprintf("\\u%04x", (($c1 - 224) <<12) + (($c2 - 128) << 6) + ($c3 - 128));
continue;
}
# Quadruple
$c4 = ord($string[++$i]);
if (($c1 & 8 ) === 0) {
$u = (($c1 & 15) << 2) + (($c2 >> 4) & 3) - 1;
$w1 = (54 << 10) + ($u << 6) + (($c2 & 15) << 2) + (($c3 >> 4) & 3);
$w2 = (55 << 10) + (($c3 & 15) << 6) + ($c4 - 128);
$json .= sprintf("\\u%04x\\u%04x", $w1, $w2);
}
}
return $json;
case 'array':
if (empty($data) || array_keys($data) === range(0, sizeof($data) - 1)) {
$output = array();
foreach ($data as $value) {
$output[] = json_encode($value);
}
return '[' . implode(',', $output) . ']';
}
case 'object':
$output = array();
foreach ($data as $key => $value) {
$output[] = json_encode(strval($key)) . ':' . json_encode($value);
}
return '{' . implode(',', $output) . '}';
default:
return 'null';
}
}
}
if (!function_exists('json_decode')) {
function json_decode($json, $assoc = false) {
$match = '/".*?(?<!\\\\)"/';
$string = preg_replace($match, '', $json);
$string = preg_replace('/[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]/', '', $string);
if ($string != '') {
return null;
}
$s2m = array();
$m2s = array();
preg_match_all($match, $json, $m);
foreach ($m[0] as $s) {
$hash = '"' . md5($s) . '"';
$s2m[$s] = $hash;
$m2s[$hash] = str_replace('$', '\$', $s);
}
$json = strtr($json, $s2m);
$a = ($assoc) ? '' : '(object) ';
$data = array(
':' => '=>',
'[' => 'array(',
'{' => "{$a}array(",
']' => ')',
'}' => ')'
);
$json = strtr($json, $data);
$json = preg_replace('~([\s\(,>])(-?)0~', '$1$2', $json);
$json = strtr($json, array_map('stripcslashes', $m2s));
$function = @create_function('', "return {$json};");
$return = ($function) ? $function() : null;
unset($s2m);
unset($m2s);
unset($function);
return $return;
}
}