php解码函数

string base64_decode ( string $data [, bool $strict = false ] )

$encoded = "SGVsbG8sIFdvcmxkIQ==";
$decoded = base64_decode($encoded);
echo $decoded; // 输出: Hello, World!

mixed json_decode ( string $json_string [, bool $assoc = false [, int $depth = 512 [, int $options = 0 ]]] )

$json = '{"name":"John", "age":30, "city":"New York"}';
$obj = json_decode($json);
echo $obj->name; // 输出: John

$array = json_decode($json, true);
echo $array['age']; // 输出: 30

string urldecode ( string $str )

$encoded = "Hello%2C+World%21";
$decoded = urldecode($encoded);
echo $decoded; // 输出: Hello, World!

$encoded = "SGVsbG8sIFdvcmxkIQ==";
$decoded = base64_decode($encoded);
if ($decoded === false) {
    echo "解码失败";
} else {
    echo $decoded;
}

$json = '{"name":"John", "age":30, "city":"New York"';
$obj = json_decode($json);
if ($obj === null && json_last_error() !== JSON_ERROR_NONE) {
    echo "解码失败: " . json_last_error_msg();
} else {
    echo $obj->name;
}

$encoded = "Hello%2C+World%21";
$decoded = urldecode($encoded);
if ($decoded === false) {
    echo "解码失败";
} else {
    echo $decoded;
}