HTTP 函数
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http_chunked_decode

(PECL pecl_http >= 0.1.0)

http_chunked_decode — Decode chunked-encoded data

说明

string http_chunked_decode ( string $encoded )

Decodes a string which is HTTP-chunked encoded.

参数

encoded

chunked encoded string

返回值

Returns the decoded string on success 或者在失败时返回 FALSE.

范例

Example #1 A http_chunked_decode() example

<?php
$string = "".
    "05\r\n".
    "this \r\n".
    "07\r\n".
    "string \r\n".
    "12\r\n".
    "is chunked encoded\r\n".
    "01\n\r\n".
    "00";
echo http_chunked_decode($string);
?>

以上例程会输出：

this string is chunked encoded

HTTP 函数
在线手册：中文 英文
PHP手册
PHP手册 - N: Decode chunked-encoded data

用户评论:

Marques Johansson (23-Mar-2009 04:48)

Here's a PHP implementation for those less interested in installing a pecl module.  It's a bit naive (doesn't handle multiple byte encodings), but it works.  I'm also including my is_hex() implementation at no additional cost.

<?php
if (!function_exists('http-chunked-decode')) {
    /**
     * dechunk an http 'transfer-encoding: chunked' message
     *
     * @param string $chunk the encoded message
     * @return string the decoded message.  If $chunk wasn't encoded properly it will be returned unmodified.
     */
    function http_chunked_decode($chunk) {
        $pos = 0;
        $len = strlen($chunk);
        $dechunk = null;

        while(($pos < $len)
            && ($chunkLenHex = substr($chunk,$pos, ($newlineAt = strpos($chunk,"\n",$pos+1))-$pos)))
        {
            if (! is_hex($chunkLenHex)) {
                trigger_error('Value is not properly chunk encoded', E_USER_WARNING);
                return $chunk;
            }

            $pos = $newlineAt + 1;
            $chunkLen = hexdec(rtrim($chunkLenHex,"\r\n"));
            $dechunk .= substr($chunk, $pos, $chunkLen);
            $pos = strpos($chunk, "\n", $pos + $chunkLen) + 1;
        }
        return $dechunk;
    }
}

    /**
     * determine if a string can represent a number in hexadecimal
     *
     * @param string $hex
     * @return boolean true if the string is a hex, otherwise false
     */
    function is_hex($hex) {
        // regex is for weenies
        $hex = strtolower(trim(ltrim($hex,"0")));
        if (empty($hex)) { $hex = 0; };
        $dec = hexdec($hex);
        return ($hex == dechex($dec));
    }
?>