HTTP::head -- sends a "HEAD" command
Opis
Sends a "HEAD" HTTP command to a server and returns the headers
in an associative array.
Przykład
Przykład 44-1. HEAD request to example.com
<?php
require_once "PEAR.php";
require_once "HTTP.php";
$result = HTTP::head("http://example.com/");
if (PEAR::isError($result)) {
echo "Error: " . $result->getMessage();
} else {
echo "<pre>";
print_r($result);
echo "</pre>";
}
?>
|
|
The output of the
print_r() call is shown
below.
Zwracana wartość
array - an array containing the header lines
or a PEAR_Error.
Example output:
<?php
Array
(
[response_code] => 200
[response] => HTTP/1.1 200 OK
[Date] => Tue, 25 Nov 2003 22:08:57 GMT
[Server] => Apache/1.3.27 (Unix) (Red-Hat/Linux)
[Last-Modified] => Wed, 08 Jan 2003 23:11:55 GMT
[ETag] => "3f80f-1b6-3e1cb03b"
[Accept-Ranges] => bytes
[Content-Length] => 438
[Connection] => close
[Content-Type] => text/html
)
?>
|
Wyjątki
Tabela 44-1. Możliwe wartości PEAR_Error
| Error code | Error message | Reason | Solution |
|---|
| NULL |
"HTTP::head Error $errstr ($erno)"
|
Connection to server failed
|
Check connectivity of your host and the given URL in
$url
|
Uwagi
Ta funkcja może być wywołana
statycznie.
