Getting header response code

Question

This is part of a PHP script I am putting together. Basically a domain ($domain1) is defined in a form and a different message is displayed, based on the response code from the server. However, I am having issues getting it to work. The 3 digit response code is all I am interested in.

Here is what I have so far:

function get_http_response_code($domain1) {
    $headers = get_headers($domain1);
    return substr($headers[0], 9, 3);
    foreach ($get_http_response_code as $gethead) { 
        if ($gethead == 200) {
            echo "OKAY!";
        } else {
            echo "Nokay!";
        }
    }
}

What issues are you having? Please paste any relevant errors that you are getting. Also, assuming the code you pasted accurately reflects your script, none of the code below your return statement will execute. — Brian Driscoll
– Brian Driscoll, Commented Aug 4, 2010 at 17:30

Mchl · Accepted Answer · 2010-08-04 17:31:36Z

30

$domain1 = 'http://google.com';

function get_http_response_code($domain1) {
  $headers = get_headers($domain1);
  return substr($headers[0], 9, 3);
}

$get_http_response_code = get_http_response_code($domain1);

if ( $get_http_response_code == 200 ) {
  echo "OKAY!";
} else {
  echo "Nokay!";
}

answered Aug 4, 2010 at 17:31

Mchl

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1 Comment

mt025 Over a year ago

Working for most things, however if the site sends a redirect, then that redirect code is first, i.e $headers[0] = 301;$headers[5] = 404 which could mean its working or not working.

Andres SK · Accepted Answer · 2013-06-03 00:41:20Z

0

If you have PHP 5.4.0+ you can use the http_response_code() function. Example:

var_dump(http_response_code()); // int(200)

answered Jun 3, 2013 at 0:41

Andres SK

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4 Comments

CJ Dennis Over a year ago

http_response_code() is for setting the outgoing code (e.g. to the browser), not checking the incoming code (from a server), which is what the OP wanted to do.

Andres SK Over a year ago

@CJDennis yep, @xmedeko is right, as per the documentation int http_response_code ([ int $response_code ] ) the $response_code parameter is optional. If set, then you change the outgoing code, if blank, you retrieve the current code received by the browser.

Jonathan Over a year ago

@andufo This doesn't work for what the OP asked for. This will only affect the response code of the code that is going to return to the browser. The OP wanted to get the headers from another website entirely thus your answer is wrong entirely.

Dennis Apr 1 at 11:54

@Jonathan I have reviewed this question. and it looks like you might be the one who does not understand. All indications are that there is exactly one URL/site in question; there was nothing stated about "headers from another website" nor anything like that. that I can see.

christian Nguyen · Accepted Answer · 2016-08-13 08:16:35Z

0

Here is my solution for people who need send email when server down:

$url = 'http://www.example.com';

while(true) {

    $strHeader = get_headers($url)[0];

    $statusCode = substr($strHeader, 9, 3 );

    if($statusCode != 200 ) {
        echo 'Server down.';
        // Send email 
    }
    else {
        echo 'oK';
    }

    sleep(30);
}

answered Aug 13, 2016 at 8:16

christian Nguyen

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Comments

RamaKrishna · Accepted Answer · 2017-02-13 09:21:00Z

0

You directly returned so function wont execute further foreach condition which you written. Its always better to maintain two functions.

function get_http_response_code($domain1) {
    $headers = get_headers($domain1);
    return substr($headers[0], 9, 3); //**Here you should not return**
    foreach ($get_http_response_code as $gethead) { 
        if ($gethead == 200) {
            echo "OKAY!";
        } else {
            echo "Nokay!";
        }
    }
}

answered Feb 13, 2017 at 9:21

RamaKrishna

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