I am using get_headers() and I want to return the content length. In the

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Asked: June 1, 20262026-06-01T06:08:40+00:00 2026-06-01T06:08:40+00:00

I am using get_headers() and I want to return the content length. In the

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I am using get_headers() and I want to return the content length. In the array below content length is key number 9, however I find that the content length is not always key number 9. I’m not sure why it is not always the same key? How do I search an array and always return the content length no matter what key it is? As I am using this in a function so the actual filesize of the file will be differen’t each time. My example code is below. Thanks in advance.

Array ( [0] => HTTP/1.0 200 OK [1] => Server: Apache [2] => Pragma: public [3] => Last-Modified: Sun, 01 Apr 2012 07:59:46 GMT [4] => ETag: "1333267186000" [5] => Content-Type: text/javascript [6] => Cache-Control: must-revalidate, max-age=0, post-check=0, pre-check=0 [7] => Expires: Sun, 01 Apr 2012 10:27:26 GMT [8] => Date: Sun, 01 Apr 2012 10:27:26 GMT [9] => Content-Length: 31650 [10] => Connection: close [11] => Set-Cookie: JSESSIONID=M0V4NTTVSIB4WCRHAWVSFGYKE2C0UIV0; path=/ [12] => Set-Cookie: DYN_USER_ID=2059637079; path=/ [13] => Set-Cookie: DYN_USER_CONFIRM=6c6a03988da3de6d704ce37a889b1ec8; path=/ [14] => Set-Cookie: BIGipServerdiy_pool=637871882.20480.0000; path=/ )

function headInfo($url) {
    $header = get_headers($url);
    $fileSize = $header[9];
    return array($header, $fileSize);
}