http_chunked_decode
(PECL pecl_http >= 0.1.0)
http_chunked_decode — Decode chunked-encoded data
说明
$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 ( $string );
?> 以上例程会输出：
this string is chunked encoded
用户评论:
[#1] Marques Johansson [2009-03-23 08:48:06]
Here's a PHP implementation for those less interested in installing a pecl module. It's a bit naive (doesn't handle multiple byte encodings), but it works. I'm also including my is_hex() implementation at no additional cost.
<?php
if (!function_exists('http-chunked-decode')) {
function http_chunked_decode($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 $dechunk;
}
}
function is_hex($hex) {
// regex is for weenies
$hex = strtolower(trim(ltrim($hex,"0")));
if (empty($hex)) { $hex = 0; };
$dec = hexdec($hex);
return ($hex == dechex($dec));
}
?>