Get header status code from stream_get_meta_data array

Question

The function stream_get_meta_data returns header as an array like this:

Array
(
[timed_out] => 
[blocked] => 1
[eof] => 
[wrapper_data] => Array
    (
        [0] => HTTP/1.1 200 OK

I can get the status with $meta['wrapper_data'][0] but how can I fetch the status code from the value which would be HTTP/1.1 200 OK as explode by HTTP/1.1 is bad idea? Is the only way to use regexp to get the code? If absolutely yes, how is the regexp to get a 3-digits number beginning with 1,2,3,4,5 only?

Regular expression for this is very simple. /[12345]\d\d/

Ahmad
– Ahmad

2016-08-02 09:19:17 +00:00
Commented Aug 2, 2016 at 9:19 — Ahmad
– Ahmad, Commented Aug 2, 2016 at 9:19

Ahmad · Accepted Answer · 2016-08-02 09:21:17Z

1

Using explode() seems to be a good idea because the format of the response is always like this by standard.

But you can use a simple regexp to extract this, too:

/[12345]\d\d/

answered Aug 2, 2016 at 9:21

Ahmad

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5 Comments

user4271704 Over a year ago

bad bad idea I meant, is it always HTTP/1.1? what about if this is a different version than 1.1.? I googled and found this trick too: substr($headers[0], 9, 3); is it a better way? or still explode or regext is better?

Wiktor Stribiżew Over a year ago

@user4271704: why ask? It is a simple choice: if your string consists of a fixed substring, and you know there will be a chunk of fixed width after it, substr is all you need. A regex is necessary when you absolutely must grab characters of exact type/class/category some number of times, from 0 to n. BTW, to match a 3-digit number starting with 1 or 2, 3, 4, or 5, you actually need /(?<!\d)[12345]\d\d(?!\d)/. Ahmad, please fix your answer.

user4271704 Over a year ago

I am not good in regexp, please explain what is the difference of your regexp with the one in answer /[12345]\d\d/ ?

user4271704 Over a year ago

And how to get the status message after the code number, e.g. OK, Forbidden etc.? How to parse the entire string to get the message?

Fuzzy76 Over a year ago

This works fine until someone claims HTTP/1.123 or has a 3-digit number in their status description.

Fuzzy76 · Accepted Answer · 2018-08-06 13:00:17Z

0

Since the HTTP wrapper follows redirects by default and that will append several HTTP responses to the wrapper_data array, you both need a stricter regexp that won't trigger on all kinds of headers and to iterate through all lines. And I'd recommend against ignoring statuscodes beginning with 6-9, as there is no way to know how HTTP might evolve in the future. Try this:

$result = array();
foreach ($responsemeta['wrapper_data'] as $headerline) {
    if (preg_match('/^HTTP\/(\d+\.\d+)\s+(\d+)\s*(.+)?$/', $headerline, $result)) {
        $http_version = $result[1];
        $http_statuscode = $result[2];
        $http_statusstring = $result[3];
    }
}

answered Aug 6, 2018 at 13:00

Fuzzy76

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